EUROPEAN UNION OF MEDICAL SPECIALISTS (UEMS) EUROPEAN ACCREDITATION COUNCIL ON CME (EACCME®) Rue de l’Industrie 24, BE- 1040 BRUSSELS T + 32 2 649 51 64 https://eaccme.uems.eu - [email protected]

Subject : EACCME®Accreditationofeventreference LEE21-00270

We are pleased to inform you that your application for EACCME® accreditation of FESSH 2021 Congress – FESSH-ON-WEEK2021, Online, Switzerland, 16/06/2021-19/06/2021 has been granted 28 European CME credits (ECMEC®s) by the European Accreditation Council for Continuing Medical Education (EACCME®).

Accreditation Statement Accreditation by the EACCME® confers the right to place the following statement in all communication materials including the event website, the event programme and the certificate of attendance. The following statements must be used without revision: “The FESSH 2021 Congress – FESSH-ON-WEEK 2021, Online, Switzerland, 16/06/2021-19/06/2021 has been accredited by the European Accreditation Council for Continuing Medical Education (EACCME®) with 28 European CME credits (ECMEC®s). Each medical specialist should claim only those hours of credit that he/she actually spent in the educational activity.” “Through an agreement between the Union Européenne des Médecins Spécialistes and the American Medical Association, physicians may convert EACCME® credits to an equivalent number of AMA PRA Category 1 CreditsTM. Information on the process to convert EACCME® credit to AMA credit can be found at www.ama-assn.org/education/earn-credit- participation-international-activities. “Live educational activities, occurring outside of , recognised by the UEMS-EACCME® for ECMEC®s are deemed to be Accredited Group Learning Activities (Section 1) as defined by the Maintenance of Certification Program of the Royal College of Physicians and Surgeons of Canada.”

EACCME® credits Each participant can only receive the number of credits he/she is entitled to according to his/her actual participation at the event once he/she has completed the feedback form. Cf. criteria 9 and 23 of UEMS 2016.20. In order to help you issue individual certificates to each participants, please find below the breakdown of ECMEC®s per day: 16.06.2021 - 5.00 17.06.2021 - 8.00 18.06.2021 - 8.00 19.06.2021 - 7.00 The EACCME® awards ECMEC®s on the basis of 1 ECMEC® for one hour of CME with a maximum of 8 ECMEC®s per day. Cf. Chapter X of UEMS 2016.20.

The UEMS-EACCME Secretariat

2 FESSH 2021 TABLE OF CONTENT

WELCOME MESSAGES...... 4

Congress Committees...... 6 FESSH Societies...... 7 FESSH Congresses...... 8

WEDNESDAY Program...... 9 THURSDAY Program...... 13 FRIDAY Program...... 33 SATURDAY Program...... 55

Poster Gallery...... 66

Industry Sponsored Workshops...... 82 Congress Sponsors...... 85

3 WELCOME MESSAGEs

Congress Presidents

Dear Colleagues,

As we all battle to Covid pandemic, the wish for educational exchange and social interac- tion have become stronger. Most of us have had reduced patient care and restricted social and family contacts for a long time.

We had hoped, that our announcement now would have been an invitation to a live con- gress in Rotterdam. The reality is unfortunately different. On the other hand, we have put a tremendous effort in creating the best online program we can do at the moment. The time schedule has been carefully selected to provide for the participants the best educational opportunity without overloading information, as we all already have been involved in many video sessions.

The program includes many sessions of a normal live program, for example the 10 best papers session from the Journal of Hand Surgery European volume, instructional courses and the EWAS session. As the theme of the meeting is complications in hand surgery, we will add an exciting session entitled “disasters from the masters”. In addition, we will present live surgery sessions on many hand surgery topics in a superb Cadlab and will debate on difficult to solve problems. A newly created concept will challenge different FESSH countries to produce presentations in a so-called “Nations Competition”. In closing, we are looking forward to welcoming you all to the FESSH Online week coming June. It will be a fantastic program that will only get better with your input as participants.

Warm greetings,

J. Henk Coert & Brigitte van der Heijden The Presidents of the FESSH 2021 Congress

4

SECRETARY GENERAL

Steering a boat through rough seas requires primarily robust material and above all sea- manship that you can rely on. For the second time in a row, we are about to launch a full virtual FESSH congress. Unlike Basel, one year ago, we realised soon, that the situation would not allow a face-to-face meeting in June. Thanks to the immense flexibility of all stakeholders, including the Finn- ish Hand Society, who agreed to postpone their future congress for one year, we have managed to limit the harm which goes along with a complete reorganisation of such an event.

With great enthusiasm and a lot of energy the organisers have managed to set together a superb online program with many highlights. Established formats like the live surgical demonstrations will be enriched by new layouts including the ‘Nations Competition’. Our industrial partners have also started to recover from their Covid-rigor. They have supported FESSH with great enthusiasm.

As Secretary General it is a privilege to have such a motivated crew on board and my warmest thanks goes to all which are contributing to the success of the coming FESSH-ON(line)-WEEK 2021.

We all hope that we are in transition to a ‘newer normal’ with future meetings being again face-to-face but perhaps including all the good things we learned. I am sure, in time to come, we will acknowledge the value of all that we expe- rienced and we will transfer the positive aspects into the ‘newer normal’.

Daniel Herren Secretary General

5 CONGRESS COMMITTEES FESSH 2021 CONGRESS COMMITTEES ORGANIZING COMMITTEE President: J. Henk Coert (The ) President: Brigitte van der Heijden (The Netherlands) Simon Farnebo (Sweden) Daniel Herren (Switzerland) Alex Lluch (Spain) Letizia Marenghi (Italy) Zafar Naqui (UK) Pierluigi Tos (Italy) Frederik Verstreken ()

Scientific Committee Chairman: Gürsel Leblebicioglu (Turkey) Fernando Corella (Spain) Piotr Czarnecki (Poland) Simon Farnebo (Sweden) Philippe Liverneaux () Zafar Naqui (UK) Niels Schep (The Netherlands) Frederik Verstreken (Belgium) Anne Vochteloo (The Netherlands)

REVIEWERS Lars Dahlin (Sweden) Angel Ferreres (Spain) Guy Rubin (Israel) Jan Debeij (The Netherlands) Pascal Hannemann (The Netherlands) Pierluigi Tos (Italy) Ilse Degreef (Belgium) Leila Harhaus (Germany) Matthias Vanhees (Belgium) Juan José Hidalgo Diaz (France) Hebe Désirée Kvernmo (Norway) Esther Vögelin (Switzerland) Mireia Esplugas (Spain) Shai Luria (Israel) David Warwick (UK) Sybille Facca Marjolein Mulders (The Netherlands) Stephanie Zielinski (The Netherlands) Uri Farkash (Israel) Montse Ocampos

Instructional Course Topic: Management of complications in common hand and wrist surgery Editors: Brigitte van der Heijden Jan-Ragnar Haugstvedt J. Henk Coert 6 FESSH Council Members FESSH member Secretary General national Societies Daniel Herren (Switzerland) Austrian Society for Surgery of the Hand (ÖGH) Belgian Hand Group (BHG) Treasurer / Finance Committee Bulgarian Society for Surgery of the Hand (BSSH) Alex Lluch (Spain) Czech Society for Surgery of the Hand (CSCR) Academic Committee / The Danish Society for Surgery of the Hand (DSFH) Journal of Hand Surgery Estonian Society for Surgery of the Hand (EKKS) J. Henk Coert (The Netherlands) The Finnish Society for Surgery of the Hand (SKKY) French Society for Surgery of the Hand (SFCM/GEM) Academic Committee / Research German Society for Surgery of the Hand (DGH) Simon Farnebo (Sweden) Hellenic Society for Surgery of the Hand and Upper Limb (EEXX) Hungarian Society for Surgery of the Hand (MKT) Communication Committee Irish Hand Surgery Society (IHSS) Zafar Naqui (UK) Italian Society for Surgery of the Hand (SICM) Congress Committee Latvian Association for Surgery of the Hand (LRKA) Brigitte van der Heijden (The Netherlands) Society for Surgery of the Hand of Republic of North Macedonia Norwegian Society for Surgery of the Hand (NFH) Examination Committee Polish Society for Surgery of the Hand (PTCR) Martin Richter (Germany) Portuguese Society of Hand Surgery (SPOCMA) Romanian Society for Surgery of the Hand (SRCR) Historian Russian Hand Surgery Society-Hand Group (RKG) Martin Langer (Germany) Serbian Society for the Surgery of the Hand (SSHS) Relationship and Subspecialties Spanish Society for Surgery of the Hand (SECMA) Committee Swedish Society for Surgery of the Hand (SFH) Frederik Verstreken (Belgium) Swiss Society for Surgery of the Hand (SGH) The Netherlands Society for Surgery of the Hand (NVvH) Relationship and Subspecialties Turkish Society for Surgery of the Hand and Upper Committee / Hand Trauma Extremity (TCD) Pierluigi Tos (Italy) Ukrainian Hand Surgery Society (UHSS) The British Society for Surgery of the Hand (BSSH) Training and Education Committee David Shewring (UK) Associate member The Israeli Society for Surgery of the Hand (ISSH)

Editor-in-Chief of the Journal Corresponding members of Hand Surgery (European Volume) Egyptian Society for Surgery of the Hand and Jin Bo Tang (China) Microsurgery (ESSHM) Young European Hand Surgeons Hong Kong Society for Surgery of the Hand (YEHS) delegate Lithuanian Society for Surgery of the Hand (LSSH) Letizia Marenghi (Italy) Slovak Association for Hand Surgery (SSCR) Slovene Society for Surgery of the Hand FESSH Management Office The South African Society for Surgery of the Hand (SASSH) Andrea Götz, Krisztina Szigedi, Nándor Mátrai The Korean Society for Surgery of the Hand (KSSH)

7 FESSH CONGRESSES Past FESSH Congresses 1993 – Brussels, Belgium – G. Lejeune 1994 – Dublin, Ireland – J. Varian 1996 – , France – A. Gilbert 1997 – Bologna, Italy – A. Landi 1998 – Vienna, Austria – H. Millesi 1999 – Bonn, Germany – P. Bruser 2000 – Barcelona, Spain – A. Lluch 2002 – , The Netherlands – S. Hovius 2003 – Lisboa, Portugal – A.C. Ferreira 2005 – Goteborg, Sweden – A. Nachemson 2006 – Glasgow, Scotland – P. Burge 2007 – , Greece – K. N. Malizos 2008 – Laussane, Switzerland – D.V. Egloff 2009 – Poznan, Poland – L. Romanowski 2010 – Bucarest, Romania – A. Georgescu 2011 – Oslo, Norway – L.E. Myrseth 2012 – Antwerpen, Belgium – Y. Baeten & J. Bahm 2013 – Antalya, Turkey – S. Ada 2014 – Paris, France – C. Mathoulin 2015 – Milan, Italy – G. Pajardi 2016 – Santander, Spain – F. Del Piñal 2017 – Budapest, Hungary – Zs. Szabó 2018 – Copenhagen, Denmark – M. Boeckstyns 2019 – Berlin, Germany – J. V. Schoonhoven, M. Haerle, A. Eisenschenk 2020 – Virtual – M. Calcagni, D. Herren

Future FESSH Congresses 15th IFSSH and XXVII FESSH Combined Congress , UK June 6-10, 2022 XXVIII FESSH Congress Rimini, Italy 10-13 May, 2023 XXIX FESSH Congress Rotterdam, the Netherlands June 26-29, 2024 XXX FESSH Congress Helsinki, Finland June 11-14, 2025 8 FESSH 2021 PROGRAM Wednesday, 16 June

Hours CHANNEL 1 15:00 -16:00 S02 AO session 16:15 -17:15 S67 BIRG session 17:30 -18:30 S78 IBRA session 19:00 -19:15 S03 Opening Ceremony 19:15 -21:15 S04 Disasters of the Masters

9 FESSH 2021 PROGRAM

Wednesday, 16 June 2021

Channel 1 08:00-12:00 Medartis Pre-Conrgess Cadlab A patient journey after a wrist and scaphoid fracture – what can go wrong and how to be back on track. Realistic cadaveric masterclass live from the Netherlands, Poland, Switzerland and the United Kingdom. 15:00-16:00 S02 AO Session A-0768 Scaphoid non-union and mal-union Renato Fricker A-0769 Malunions of the metacarpals and phalanges Alex Lluch Discussion 16:15-17:15 S67 BIRG Session - Update in Hand and Wrist Complication Management Chair: Max Haerle Solutions for complications in metacarpals and phalangeal reconstruction A-0770 Previous vs. innovative treatment options Stephan Schindele A-0771 Clinical case examples Niels Schep Panelists’ discussion Solutions for complications in intra- and extra-articular radius reconstruction A-0772 Previous vs. innovative treatment options Stephan Schindele A-0773 Clinical case examples Niels Schep Panelists’ discussion

10 17:30-18:30 S78 IBRA Session - Distal Radius and Scaphoid Fractures – How Can We Do Better? Chairs: Wolfgang Hintringer, Hermann Krimmer Session I – Distal radius fractures – how to avoid complications A-0774 Key fragments – what does that mean? Wolfgang Hintringer A-0775 Tips and tricks Christophe Pezzei Case discussion Session II – Carpal fractures – reasons for failure A-0776 Acute scaphoid fractures Martin Leixnering A-0777 Scaphoid nonunion Markus Gabl Case discussion 19:00-19:15 S03 Opening Ceremony 19:15-21:15 S04 Disasters of the Masters Chair: Daniel Herren, Elisabet Hagert Five established and experienced hand surgeons are presenting a personal case in which the out- come did not matched the anticipated result. On the basis of these ‘disasters’, complications and it conclusions will be highlighted. Expect a firework of learning lessons, does and don’ts, pearls and pitfalls. Case presentations Critical analysis Conclusion - What went wrong? - What would I do again like this? - What did I learn? Moderated Discussion with questions from the audience Participants - Elisabet Hagert (Sweden) - Max Haerle (Germany) - Philippe Bellemère (France) - Radek Kebrle (Czech Republic) - Daniel Herren (Switzerland)

11 A-0826 Case Report by Daniel Herren Daniel Herren A-0827 How can something so common so wrong? Elisabet Hagert, Felicia Rosvall A-0828 Case Report by Radek Kebrle Radek Kebrle, Martin Czinner A-0829 Case Report by Philippe Bellemére Philippe Bellemére A-0830 Case Report: Endoscopic carpal tunnel release Max Haerle

12 FESSH 2021 PROGRAM Thursday, 17 June 2021

Hours CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 S05 07:00-09:00 Instructional Course 1 S06 09:00-11:30 Live surgery 1 S07 S08 S09 S10 S11 11:30-12:30 Free Papers 01 Free Papers 02 Free Papers 03 Free Papers 04 Free Papers 05 12:30-14:00 Industry Sponsored Program S13 S14 Young European S15 14:00-15:00 New innovations Hand Surgeons Journal Session in Social Media Session 15:00-17:30 Live surgery 2 17:30-18:00 Industry Sponsored Program S18 S19 S20 S21 18:00-19:00 Free Papers 06 Free Papers 07 Free Papers 08 Free Papers 09 S22-S27 19:00-22:00 Nation competition

13 FESSH 2021 PROGRAM

Thursday, 17 June 2021

Channel 1 07:00-09:00 S05 Instructional Course 1 A-0697 Management of complications of Flexor Tendon Surgery Duncan Angus McGrouther A-0835 Management of Flexor Tendon Adhesions and Pulley loss Peter C Amadio A-0698 The complexity of the extensor tendon David Elliot, Thomas Giesen A-0699 Management of Complications in Sensory Nerve Surgery Pierluigi Tos A-0700 Complications: Mixed Nerve Repair Dominic Power A-0701 Management of Carpal Tunnel Release Complications Daniel Nagle A-0702 Management of Finger Fracture Complications Mick Kreulen A-0703 Complications in Carpal fractures Florian Lampert A-0704 Management of complications of Scaphoid Fracture Fixation Geert Buijze A-0705 Lunate facet fractures of the distal radius Greg Bain, Simon MacLean A-0706 Complications and DRFs. Pearls and Pitfalls Niels Schep

14 09:00-11:30 S06 Live surgery 1 09:00-10:00 Moderators onsite: Niels Schep, Xander Smit Experts online: Daniel Herren, Stephan Schindele Table I: Proximal Interphalangeal/MetaCarpophalangeal Phalangeal Joint MCP thumb fusion Mini external fixator (PIP) Surgeons: Miryam Obdeijn, Simon Strackee Table II: TrapezioMetacarpal/Proximal Interphalangeal Phalangeal Joint CMC 1 implant PIP implant Surgeons: Tjeerd de Jong, Arnold Schuurman 10:30-11:30 Moderators onsite: Frederik Verstreken, Alex Lluch Experts online: Maurizio Calcagni, Frank Beeres Table I: Radius fractures Plate and spanning 3D imaging Surgeons: Joost Colaris, Jan Debeij Table II: Radius fractures Radius plating Radius/forearm plating Surgeons: Niels Schep, Roland Klein Nagelvoort 11:30-12:30 S07 Distal radius fractures Chair: Philippe Liverneaux A-0104 Treatment of minimally displaced metaphyseal both-bone fractures of the distal forearm in children: long-term results of a randomised controlled multicenter trial. Linde Musters, Leon W. Diederix, Kasper C. Roth, Pim P. Edomskis, Gerald A. Kraan, Jan H. Allema, Max Reijman, Joost W. Colaris | Linde Musters, Department of Orthopedics, Noordwest Ziekenhuis- groep Alkmaar A-0052 A New Clinical Pathway for the Management of Paediatric Distal Radius Torus Fractures – Fewer Appointments and Safe Care Raj Pradhan1, Colin McDonald1, Aashish Ahluwalia1, Alistair Hunter1 | 1University College Hospital, London, UK A-0241 Complications of the nonoperative versus operative treatment of displaced and reduced distal radial fractures in adults: a systematic review Eva A.K. van Delft1,2, Emilien C. J. Wegerif1, Ralph de Vries1, Jefrey Vermeulen,3, Frank W. Bloem- ers1. | 1Amsterdam UMC, Vrije Universiteit Amsterdam, Netherlands; 2Spaarne Gasthuis, Haarlem, Netherlands; 3Maasstad Ziekenhuis, Rotterdam, Netherlands

15 A-0004 Pronator quadratus repair after volar plate fixation in distal radial fractures: evaluation of the clinical and functional outcome and of the protective role on the flexor tendons – a randomized controlled study Chul Ki Goorens1, Pieter-Bastiaan De Keyzer1,2, Kjell Van Royen2, Steven Provyn1, Jean Goubau2 | 1Regionaal Ziekenhuis Tienen, Tienen, Belgium; 2Universitair Ziekenhuis Brussel, Brussel, Belgium A-0413 The Management of Acute on Chronic Distal Radius Fractures Jorge Orbay1, Menar Wahood2, Abby Halpern2, Deana Mercer3 | 1The Hand & Upper Extrem- ity Institute, Miami, FL, USA; 2Larkin University Hospital, Department of Orthopedics, Miami, FL, USA; 3The University of New Mexico, Department of Orthopaedics, Albuquerque, NM, USA A-0025 Impact of age on outcomes of flexor tendon rupture following distal radius fracture Koji Moriya1, Yutaka Maki1, Naoto Tsubokawa1 | 1Niigata Hand Surgery Foundation, Japan A-0375 Application of Continuous Passive Motion machine in patients with distal radius fractures; Randomized Clinical Trial Maryam Farzad1,4, Joy MacDermid1,2, Arezoo Shirzadi4, Amir Reza Farhoud3, Erfan Shafiee1 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of West- ern Ontario, Canada; 2Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, Ontario, Canada; 3Tehran University of medical sciences, Tehran, Iran; 4University of social welfare and rehabilitation sciences, Tehran, Iran A-0358 Pain at Rest, Movement Evoked Pain, and their Ratio Predict Pain and Disability at Six- and 12-Months after Distal Radius Fracture Maryam Farzad1,5, Joy C MacDermid1,2, Saurabh Mehta4, Ruby Grewal3, Erfan Shafiee1 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, Canada; 2Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, Ontario, Canada; 3Roth McFarlane Hand and Upper Limb Center, Department of Surgery, Western University, London, ON; 4Department of Orthopedic Surgery, Joan C Edwards School of Medicine, Marshall Uni- versity, Huntington, WV, USA; 5University of social welfare and rehabilitation sciences, Tehran, Iran A-0868 Distal radius fractures session commentaryy Philippe Liverneaux Channel 2 11:30-12:30 S08 CMC Thumb 1 Chair: Ilse Degreef A-0344 Comparison between the Manometric Brace and Conventional Plaster Brace for Patients with Trapeziometacarpal Osteoarthritis: A Controlled Randomised Crossover Clinical Trial E. Eyiis, N.M.C. Mathijssen, P. Veldt-Kok, J. Sluijter, G.A. Kraan | Reinier de Graaf Hospital, Delft, The Netherlands

16 A-0394 The prevalence, incidence, and progression of radiographic Thumb Base osteoarthritis in a population-based cohort: the Rotterdam Study. JS Teunissen1,2,3, RM Wouters1,2,4, SMA Bierma-Zeinstra5,6, JBJ van Meurs7, TAR Schreuders1, JM Zuidam1, RW Selles1,2 | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, University Medical Centre Rotterdam, The Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands; 3Department of Plastic, Reconstructive, and Hand Surgery, Radboudumc, Nijmegen, The Netherlands; 4Center for Hand Therapy, Handtherapie Nederland, The Netherlands; 5Department of General Practice, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands; 6Department of Or- thopedic Surgery, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands; 7Department of Internal Medicine, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands A-0384 The prevalence of radiographic thumb base osteoarthritis: a meta-analysis MJW van der Oest1,2,3, LS Duraku1, ER Andrinopoulou4, RM Wouters1,2,5, SMA Bierma-Zeinstra6,7 RW Selles1,2, JM Zuidam1 | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, the Netherlands; 4Department of Biostatistics, Erasmus MC, Rotterdam, The Netherlands; 5Center for Hand Therapy, Handtherapie Nederland, Utre- cht, The Netherlands; 6Department of General Practice, Erasmus MC, Rotterdam, The Netherlands; 7Department of Orthopedic surgery, Erasmus MC, Rotterdam, The Netherlands A-0349 Radiological measurement of trapezial dysplasia – variation of trapezial tilt and trapezial inclination Kjell Van Royen1, Mathieu Gevers1, Bert Vanmierlo2, Thierry Scheerlinck1, Jean Goubau1 | 1UZ Brussel, Brussels, Belgium; 2AZ Delta, Roeselare, Belgium A-0352 3D planning and patient specific instrumentation for intraarticular corrective osteotomy of trapezio-metacarpal and finger joints Method Kabelitz1, Pascal Furrer1, Sandro Canonica1, Andreas Schweizer1 | 1University Hospital Balgrist, Zürich, Switzerland A-0249 Long-term Follow Up after first dorsal extension osteotomy in early thumb carpometacarpal arthritis Enrico Coppo, Philipp Honigmann, Damian Sutter | Kantonsspital Baselland, Liestal, Switzerland A-0186 Autologous Fat Transplantation for Thumb Carpometacarpal Joint Osteoarthritis (Liparthroplasty): A Case Series with 2 Years of Follow-up Michael Pollak1,2, Matthias Holzbauer1,2, Manfred Schmidt2,3, Oskar Kwasny1,2 Dominik Duscher4, Stefan M. Froschauer1,2* | 1Department for Trauma Surgery and Sport Traumatology, Med Campus III, Kepler University Hospital Linz, Krankenhausstrasse 3, 4020 Linz, Austria; 2Johannes Kepler University Linz, Faculty of Medicine, Altenbergerstraße 69, 4020 Linz, Austria; 3Department of Plastic, Aesthetic, and Reconstructive Surgery, Med Campus III, Kepler University Hospital Linz, Krankenhausstrasse 3, 4020 Linz, Austria; 4Department of Plastic Surgery and Hand Surgery, Eberhard Karls University Tuebingen, Germany; * Correspondence: [email protected]; Tel.: 0043 732 780673992

17 A-0499 Tenosuspension technique with suture-anchor in first carpo-metacarpal joint arthritis: long term follow-up results Laura Martini, G. Caruso, L. Preziuso, S. Sargenti1, A.Vitali | Division of Hand and Upper Limb Surgery, Azienda Usl Toscana Centro - Palagi Hospital, Florence, Italy; 1Phisiotherapist Unit, Azienda Usl Toscana Centro, Florence, Italy A-0095 Stability of the first carpometacarpal joint during trapeziectomy with tendon suspension and interposition Pascal Behm1,2, Miriam Marks1, Stephen J. Ferguson2, Michael Brodbeck1, Daniel B. Herren1 | 1Schulthess Klinik, Switzerland; 2ETH Zurich, Switzerland A-0135 Metacarpal Subsidence Following Trapeziectomy Abigail E. Meyers, Jillian P. Krebs, Arvin Smith, Antonio Rampazzo, Bahar Bassiri Gharb | Cleve- land Clinic, Cleveland, OH, USA A-0861 CMC Thumb 1 session commentary Ilse Degreef Channel 3 11:30-12:30 S09 CTS 1 Chair: Anne Vochteloo A-0369 Diagnostic accuracy of sensory and motor tests for carpal tunnel syndrome diagnosis: a systematic review Dabbagh A, McDermid JC, Yong J, Macedo LG, Packham TL, Ghodrati M, Armaghan Dabbagh PT PhD Candidate1, Joy C MacDermid PT PhD1,2,3, Joshua Yong OT MSc 4, Tara L. Packham OT PhD 2, Luciana G. Macedo PT PhD 2, Maryam Ghodrati PT PhD Candidate 1| 1School of Physical Therapy, Faculty of Health Science, Western University, London, Ontario,Canada; 2School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada; 3Roth McFarlane Hand and Upper Limb Centre, St. Joseph's Hospital, London, Ontario, Canada; 4Sengkang General Hospital, Singapore A-0368 Determinants of Pain and Disability After Carpal Tunnel Release. Systematic Review Erfan Shafiee1, Maryam Farzad1, Joy MacDermid1, Amirreza Farhoud2, Mohammad Mahdavi3 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, London, ON, Canada; 2Imam Hospital, Tehran University of Medical Sciences, Joint Reconstruction Research Center, Tehran, Iran; 3University of Social Welfare and Rehabilitation Sciences, Tehran, Iran A-0598 Carpal Tunnel Syndrome: live with pain or live without pain? Daragan R.1, Kondrashova І.1 Kudlai R.1, Boiko М.1, Tereshenko A.1, Daragan V.2 | «City Clinical Hospital №16»1; «Dnipropetrovsk hospital for war veterans»2Dnipro, Ukraine A-0402 Surgical intervention for carpal tunnel syndrome in individuals with spinal cord injuries - patient characteristics, diagnostic considerations and treatment outcome Armin Pallaver1,2, Silvia Schibli1, Jan Fridén1 | 1Swiss Paraplegic Centre, Nottwil, Switzerland; 2Cantonal Hospital of Lucerne, Switzerland

18 A-0692 Ultrasound-guided, ultra-minimally-invasive carpal tunnel release – literature review of a novel trend in hand surgery and discussion of own preliminary results Konrad Mende, Valentin Schmid, Dirk J. Schaefer, Andreas Gohritz | Plastic, Reconstructive and Aesthetic Surgery, Hand Surgery, University Hospital, Basel, Switzerland A-0098 The predictive value of grip strength in carpal tunnel syndrome Balazs Lenkei, Adrienn Lakatos, Zsolt Szabó | Hand Surgery Center Miskolc, Hungary A-0012 What does preoperative pinch strength predict in case of carpal tunnel syndrome? Adrienn Lakatos, Balazs Lenkei, Zsolt Szabo | Hand Surgery Center, Miskolc, Hungary A-0865 CTS 01 session commentary Anne Vochteloo Channel 4 11:30-12:30 S10 Clinical Examination / Diagnostic Chair: Leila Harhaus A-0608 Sensitivity and specificity of clinical examination in open injuries of the hand Jordan Oldbury1, James McGhee1, Alastair Lowrie1 | 1Department of Plastic Surgery, Ninewells Hospital, Dundee, United Kingdom A-0167 Diagnostic accuracy of history taking, physical examination and imaging for non-chronic finger, hand and wrist ligament and tendon injuries: a systematic review update. Patrick Krastman1, Nina M. Mathijssen3, Sita M.A. Bierma-Zeinstra1,2, Gerald Kraan3, Jos Runhaar1 | 1Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of General Practice. Room NA1911 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 2Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of Orthopaedics. Department of General Practice. Room NA1920 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 3Reinier de Graaf Groep, Delft, the Netherlands, Department of Orthopaedic Surgery. Reinier de Graafweg 5-11, 2625 AD Delft, the Netherlands A-0467 Nerve Injuries and Delays in Treatment Negatively Impact Patient-Reported Quality of Life Ivica Ducic1, John M. Felder2 | 1Washington Nerve Institute, McLean, VA, USA; Washington Univer- sity, St Louis, USA A-0452 Compensation after hand surgery. A review of 1321 claims to the Norwegian System of Patient Injury Compensation 2007- 2017 Sunniva Martine Kolstad Addison1, Lisa Sofie Albrigtsen1, Ida Rashida Khan Bukholm2,3, Hebe Désirée Kvernmo1,4 | 1Faculty of Health Sciences, University of Tromsø - Arctic University of Norway; 2The Norwegian System of Patient Injury Compensation; 3Norwegian University of Life Sciences; 4Hand Unit, Department of Orthopaedic Surgery, Northern Norway University Hospital

19 A-0263 Image quality and radiation exposure of the Mini C-arm versus the C-arm; is there a cut-off point between both device? JRM van Rappard1,2, MJPF Ritt2, SD Strackee2, N Veeger1, CM Moues-Vink1 | 1Medical Center Leeu- warden, the Netherlands, 2Amsterdam University Medical Center, the Netherlands A-0035 High-resolution ultrasound is a more useful primary diagnostic tool than magnetic resonance imaging for subungual glomus tumors In Cheul Choi, Hyun Jae Ryoo, Ji Hun Park, Jong Woo Kang, Jong Woong Park | Korea University College of Medicine, Seoul, South Korea A-0145 Why do patients with breast cancer visit hand clinic? Ji Sup Hwang, Yohan Lee, Kee Jeong Bae, Jihyeung Kim, Hyun Sik Gong, Young Ho Lee, Goo Hyun Baek | Seoul National University College of Medicine, Seoul National University Hospital, Korea A-0295 Complications and safety of the transplanted organ after upper extremity surgery in patients receiving immunosuppressant therapy after solid organ transplantation Seonjeong Lee, Jae Kwang Kim, and Young Ho Shin | Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea A-0075 Electric cutters, a health care issue Diogo Andrade Guimarães; Luís Vieira; Luís Ribeiro; Manuel Vilela; Miguel Matias; Pedro Martins; Maria Manuel Mouzinho | Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal A-0860 Clinical Examination / Diagnostic session commentary Leila Harhaus Channel 5 11:30-12:30 S11 DIP / PIP joints / Nail Chair: Piotr Czarnecki A-0387 The retinacular ligaments of the extensor aponeurosis revisited Tomas Borgström1, Jörgen Tranum Jensen2, Lars. B. Dahlin1,3 | 1Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden; 2Department of Cellular and Molecular Medicine, Panuminsti- tuttet, University of Copenhagen, Denmark; 3Department of Translational Medicine – Hand Surgery, Lund University, Malmö, Sweden A-0581 Easy flow with a MiniFlo? An external distraction device to overcome joint contractions. Lena Fuest, Luzian Haug, Stefanie Hirsiger, Esther Vögelin | Department of Plastic and Handsur- gery, University Hospital Bern, Switzerland A-0286 Comparative study between tension band wiring and compression screw for proximal interphalangeal and metacarpophalangeal joint arthrodesis Jorge G. Boretto, Javier Bennice, Ezequiel E. Zaidenberg, Ignacio Rellan, Agustin G. Donndorff, Gerardo L. Gallucci, Pablo De Carli | Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina

20 A-0445 Outcomes and Complication Rates following the use of the MatOrtho PIPR Arthroplasty System in the Management of Proximal Interphalangeal Joint Osteoarthritis Timothy Hardwick, Christopher Williams | Royal Sussex County Hospital, Brighton, UK A-0031 Five-year outcomes of surface replacing arthroplasty at the proximal interphalangeal joint Vanessa Reischenböck1, Miriam Marks2, Daniel B. Herren1, Stephan Schindele1 | 1Department of Hand Surgery Schulthess Klinik, Zurich, Switzerland; 2Department of Teaching, Research and Development Schulthess Klinik, Zurich, Switzerland A-0125 Partial resection of volar plate for patients with stiff finger Ji Sup Hwang, Yohan Lee, Kee Jeong Bae, Jihyeung Kim, Hyun Sik Gong, Young Ho Lee, Goo Hyun Baek | Seoul National University College of Medicine, Seoul National University Hospital, Korea A-0278 Percutaneous DIP joint arthrodesis – outcomes over the last 10 years of performing this technique Soha Sajid, Jefin, Jose, Akshay Malhotra, David Ford, Simon Pickard | Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, SY10 7AG A-0867 DIP / PIP joints / Nail session commentary Piotr Czarnecki Channel 1 12:30-13:20 Industry sponsored program Channel 2 13:00-14:00 Industry sponsored program Channel 3 13:30-14:00 Industry sponsored program Channel 1 14:00-15:00 s13 Soft skills. New techniques beyond hand surgery Young European Hand Surgeons Session Chair: Letizia Marengh This session would like to help to maintain an awareness of the effect of a more holistic manage- ment approach to the patient. NLP (neurolinguistic programming) and mindfulness are transver- sal topics to all medical fields even more appreciated, implemented and popular.

We will talk about NLP as a method to improve the doctor-patient relationship and the expected outcomes. Moreover the session will focus on the impact of mindfulness in doctors’well-being and how it could be helpful in maintaining the ability to take oneself out of a stressful situation, and get some clarity of thought.

21 A-0831 Introduction Letizia Marenghi A-0832 NPL in medical practice Ian McDermott A-0833 Mindfulness for clinician wellbeing Emma Hodgkinson A-0834 Final conclusion and greetings Letizia Marenghi Channel 2 14:00-15:00 s14 New innovations in Social Media - don’t allow your practice to fall behind Chair: Zafar Naqui, Mireia Esplugas Social media continues to be a versatile tool in our professional practice - now more so than ever. Learn what’s changed and whats’ new in this rapidly developing area and how you can harness the new digital technologies to improve your own practice. A-0778 Welcome & Introduction Zaf Naqui | UK A-0779 The new FESSH Communications Committee - what's happening and why? Viviana Rosero | Hungary A-0780 How do we want to meet in the future? Results of the FESSH Virtual Survey Egemen Ayhan | Turkey A-0781 How you can organize a successful webinar: Tips & Tricks. Anne Vochteloo, Francesca Toia | The Netherlands, Italy A-0782 How to up your Social Media Game: Tips & Tricks Thomas Apard | France A-0783 Are videos the new social media tools? Nikolai Karpinski | Russia A-0784 Why stories are important in SoMe. Letizia Marengi | Italy A-0785 How to best share your interesting cases on SoMe. Justin Hasenecker | Germany A-0786 Conclusions and Q&A Mireia Esplugas | Spain

22 Channel 3 14:00-15:00 s15 Journal session: Up to date statistics, best papers, editor in chief Chair: Gürsel Leblebicioglu In this session, up-to-date statistical data on JHS-E will be summarized and 10 valuable studies, which were downloaded the most between February 2020 and February 2021, will be presented by their authors. These studies are related to Dupuytren’s Disease, teratogenesis, scaphoid fractures, denervation, publication ethics, pulley problems, CMC-I osteoarthritis and clinical evaluation methods. It is a rare opportunity to listen those original studies, which are created by large working groups after spending a long time, from their own authors within an hour. A-0825 Journal's Performance Gürsel Leblebicioglu | Turkey A-0745 Is Dupuytren's disease really a 'disease of the Vikings'? Dominic Furniss, Daniel J Lawson, Bruce Winney, Michael Ng A-0746 The teratogenic effects of thalidomide on limbs Neil Vargesson A-0747 Controversies and best practices for acute scaphoid fracture management Nina Suh, Ruby Grewal A-0748 The outcome of bone graft surgery for nonunion of fractures of the scaphoid Samer S. Mahmoud, Tim R. C. Davis, Michael Elvey, Ryckie G. Wade, Stephanie Spence, Alexia Karantana, Simon Robinson, Clare Rowan, Alex J. Nicholls, Mohannad B. Ammori A-0751 Responsibilities of authors, institutes and journals on publication Michel E. H. Boeckstyns, Jin Bo Tang A-0753 Basal thumb osteoarthritis surgery improves health state utility irrespective of technique: a study of UK Hand Registry data Matthew D. Gardiner, Robert Poulter, Dominic Furniss, Jennifer C. E. Lane, Jeremy N. Rodrigues, Edward Burn A-0766 Clinical measurement of the dart throwing motion of the wrist: variability, accuracy and correction Vasiliki Vardakastani, Hannah Bell, Sarah Mee, Gavin Brigstocke, Angela E. Kedgley A-0767 Patient’s satisfaction beyond hand function in Dupuytren’s disease: analysis of 1106 patients Steven E. R. Hovius, Yara E. van Kooij, Harm P. Slijper, Ralph Poelstra, Mark J. W. van der Oest, Ruud W. Selles

23 15:00-17:30 Channel 1 15:00-16:00 s16 Live surgery 2 Moderators onsite: Frederik Verstreken, Roland Klein Nagelvoort Experts online: Randy Bindra, Simon Farnebo Table I: Wrist arthroplasty Total Wrist Arthroplasty Surgeons: Henk Coert - Anne Vochteloo Table II: Wrist arthroplasty Total Wrist Arthroplasty Surgeons: Mick Kreulen - Alex Lluch 16:30-17:30 s16 Live surgery 2 Moderators onsite: Tjeerd de Jong, Mick Kreulen Expert online: Erik Walbeehm Table I: Phalanx (incl. malunion and Mallet), Metacarpal fractures Various plating options Surgeons: Miryam Obdeijn, Brigitte van der Heijden Table II: Neurovasc Nerve and microvascular reconstructions Surgeons: Assa Braakenburg, Tjeerd de Jong Channel 1 17:30-18:00 Industry sponsored program Channel 2 17:30-18:00 Industry sponsored program Channel 3 17:30-18:00 Industry sponsored program Channel 1 18:00-19:00 S18 Distal radius maluinon Chair: Tahir Sadik Süğün A-0371 Distal radius fracture detection with convolutional neural network Turkka Anttila1, Teemu Karjalainen2 , Eero Waris1, Nina Lindfors1, Miika Leminen3,4, Teemu Mäkelä5, Jorma Ryhänen1 | 1Department of Hand Surgery, HUS Helsinki University Hospital and University of Helsinki, Helsinki, Finland; 2Department of Hand Surgery, Central Finland Central Hospital, Jyväskylä, Finland; 3Analytics and AI development services, IT Department, HUS Helsinki University Hospital, Helsinki, Finland; 4Department of Otorhinolaryngology and Phoniatrics, HUS Helsinki University Hospital and University of Helsinki, Helsinki, Finland; 5Department of Radiology, HUS Helsinki University Hospital and University of Helsinki, Helsinki, Finland 24 A-0441 The keystone- lunate fossa fragment, volar displaced intra-articular distal radius fractures Manikandar Srinivas Cheruvu1 Debashis Dass1Gopikanthan Manoharan1 David James Ford1 Ibrahim Roushdi1 | 1Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, United Kingdom A-0280 Follow up of Distal radius volar plating – No role for post-operative radiographs Jefin Jose Edakalathur, Manikandar Srinivas Cheruvu, Simon J Pickard | Robert Jones and Agnes Hunt Hospital, Oswestry, United Kingdom A-0488 The role of patient specific implants in complex 3D reconstructions of the distal forearm Radek Kebrle1,2, Niels Schep3, Martin Czinner1,2,4 | 1Klinika Dr. Pírka, CZ; 2Vysoké nad Jizerou, CZ; 3Maasstad Ziekenhuis, NL; 4Krajská nemocnice Liberec, CZ A-0585 Corrective osteotomy for diaphyseal forearm malunions using 3D planning and patient-specific surgical guides: clinical and radiographical outcome in 30 patients with a minimum follow-up of 1 year De Keyzer P.-B.1,2, Walschot L.3, Van Haver M.2,4, Vanhees M.2,5, Verstreken F.2,5 | 1AZ Maria Mid- delares, Gent, Belgium; 2AZ Monica, Antwerp, Belgium; 3AZ St.-Maarten, Mechelen, Belgium; 4MoRe Institute, Antwerp, Belgium; 5Universitary hospital Antwerp, Antwerp, Belgium A-0252 Fracture-dislocations of the forearm joint. A systematic review of the literature and a comprehensive locker-based classification system Stefano Artiaco MD, Ph.D., Federico Fusini MD, Arman Sard MD, Elisa Dutto MD, Matteo Ferrero MD, Bruno Battiston MD, Ph.D. [email protected] | Orthopaedic and Trauma Center, CTO Hospital, Turin, Italy A-0616 Distribution of sensory nerve endings in the interosseous membrane of the forearm Susanne Rein1,2, Mireia Esplugas3, Marc Garcia-Elias3, Thomas Magin4, Frank Siemers2,5, Hubertus Philipps1 | 1Department of Plastic and Hand Surgery, Burn Unit, Hospital Sankt Georg, Delitzscher Straße 141, 04129 Leipzig, Germany; 2Martin-Luther-University, Halle-Wittenberg, Germany; 3Institut Kaplan, Hand and Upper Extremity Surgery, Paseo de la Bonanova 9, 08022, Barcelona, Spain; 4Division of Cell and Developmental Biology, Institute of Biology, University of Leipzig, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany; 5Department of Plastic and Hand Surgery, Burn Unit, Trauma Center Bergmannstrost, Merseburger Straße 165, 06112 Halle (Saale), Germany A-0869 Distal radius maluinon session commentary Tahir Sadik Süğün

25 Channel 2 18:00-19:00 S19 CMC Thumb 2 arthroplasty Chair: Uri Farkash A-0290 Influence of the 1st carpometacarpal joint fusion on thumb-tip movement Toshiyasu Nakamura1, Yusuke Kawano2, Mitsunori Tada3, Takeo Nagura2 | 1Department of Orthopaedic Surgery, International University of Health and Welfare, Tokyo, Japan; 2Department of Biomechanics, Keio University, Tokyo, Japan; 3Digital Human Research Center, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan A-0627 Improved preservation of the pinch strength by the PyroDisk CMC thumb arthroplasty compared to trapeziectomy with interposition arthroplasty Brigitte van der Heijden1,2, Simone Donners3, Joris Teunissen2, Arnold Schuurman3, Cecile van Laarhoven4 | 1Jeroen Bosch Ziekenhuis, Den Bosch, NL; 2Radboudumc, Nijmegen, NL; 3UMCU, , NL; 4ErasmusMC, Rotterdam, NL A-0032 Capsular resection or suture in thumb carpometacarpal joint implant arthroplasty? Vanessa Reischenböck1, Michael Oyewale2, Miriam Marks2, Stephan Schindele1, Daniel B. Herren1 | 1Department of Hand Surgery Schulthess Klinik, Zurich, Switzerland; 2Department of Teaching, Research and Development Schulthess Klinik, Zurich, Switzerland A-0156 Long term Results of Elektra prosthesis compared to resection-suspension arthroplasty for thumb carpometacarpal osteoarthritis Stefan M Froschauer1, Matthias Holzbauer1, Oskar Kwasny1, Julian A Mihalic1, Dominik Duscher1,2 | 1Kepler University Hospital Linz, Department for Trauma Surgery and Sportstraumatology, Linz, Austria; 2Eberhard Karls University, Department for Plastic, reconstructuve and Hnad Surgery, Tuebingen, Germany A-0551 Pyrocardan implant arthroplasty for trapeziometacarpal osteoarthritis with a minimum follow-up of 5 years Emanuele Gerace1, Deborah Royaux2, Etienne Gaisne2, Ludovic Ardouin2, Philippe Bellèmere2 | 1ASST Cremona, Lombardy, Italy; 2Institut de la Main Nantes-Atlantique, Saint Herblain, France A-0491 Long-term follow-up of patients treated with pyrocarbon disc implant for thumb carpometacarpal osteoarthritis: the effect of disc position on outcomes measurements. Janna S. E. Ottenhoff1, Cecile. M.C.A. van Laarhoven1,2, Mark van Heijl3, Arnold H. Schuurman1, J. Henk Coert1, Brigitte E.P.A. van der Heijden4,5 | 1Department of Plastic, Reconstructive, and Hand Surgery, University Medical Center, Utrecht, The Netherlands; 2Department of Plastic, Reconstruc- tive, and Hand Surgery, Erasmus Medical Center,Rotterdam, The Netherlands; 3Department of Surgery, Hand and Wrist Unit, Diakonessenhuis, Utrecht, The Netherlands; 4Department of Plastic and Hand Surgery, Jeroen Bosch Hospital, ‘s-Hertogenbosch, The Netherlands; 5Department of Plastic Surgery, Radboud Medical Center, Nijmegen, The Netherlands.

26 A-0596 Dual-mobility touch prosthesis: A functional alternative in surgical treatment of painful thumb osteoarthritis: A prospective analysis with 41 prostheses Florian Falkner1,2, Arman Mahmut Tümkaya1,2, Benjamin Thomas1,2, Benjamin Panzram3, Ulrich Kneser1,2, Leila Harhaus1,2, Berthold Bickert1,2 | 1Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Ludwig-Guttmann-Strasse 13, 67071 Ludwigshafen, Germany; 2Hand and Plastic Surgery, University of Heidelberg, Heidelberg, Germany; 3Center of Orthopaedics, Trauma Surgery and Paraplegiology, University of Heidelberg, Germany A-0326 Revision of Arpe trapeziometacarpal arthroplasty by isolated head and linear exchange in 5 cases. Nicolas Bigorre, Alexandre Petit, Jérome Brunet, Yann Saint Cast, Guy Raimbeau | Centre de la Main, Angers, France A-0057 Major complications associated with Trapeziometacarpal Total Arthroplasty (TMCA) in Valdecilla Hospital Jose Antonio Fernández-Dívar, Manuel Sánchez, Higinio Ayala, Jose Couceiro, M de los Angeles De la Red, Fernando Javier Del Canto. | Hospital Universitario Marqués de Valdecilla, Santander, Spain. A-0862 CMC Thumb 2 arthroplasty session commentary Uri Farkash Channel 3 18:00-19:00 S20 CTS 2 / CuTS Chair: Stephanie Zielinski A-0673 A prospective comparative study between Monocryl, Vicryl Rapide and Ethilon for skin closure in open carpal tunnel decompression Dominique Hughes1, Pauline McGee1, Luca Lancerotto1, Gillian Robertson1, Claire Simpson1, Dominique Davidson1 | 1St John's Hospital, Livingston, UK A-0300 Median nerve entrapment syndrome in the elbow and proximal forearm. Anatomic causes of compression and 55 cases series surgical treatment outcomes at seven years mean follow-up. Clara Sos1, Steven Roulet1, Jacky Laulan1, Guillaume Bacle1,2 | 1Service de chirurgie orthopédique et traumatologique, unité de chirurgie de la main et desnerfs périphériques, Hôpital Trousseau, Centre Hospitalo-Universitaire, Tours, France; 2UMR 1253, iBrain, Université de Tours, Inserm, Tours, France A-0609 Work-related risk factors for ulnar nerve entrapment in the Northern Finland Birth Cohort of 1966. Laura Miettinen1, Jorma Ryhänen1, Rahman Shiri2, Jaro Karppinen3,4, Jouko Miettunen3,5, Juha Auvinen3,5,6, Sina Hulkkonen1 | 1Department of Hand Surgery, Helsinki University Hospital and University of Helsinki, Finland; 2Finnish Institute of Occupational Health, Helsinki, Finland; 3Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland; 4Finnish Institute of Occupational Health, Oulu, Finland; 5Center for Life Course Health Research, University of Oulu, Oulu Finland; 6Oulunkaari Health Center, Ii, Finland

27 A-0187 Outcome of Simple Decompression of Primary Cubital Tunnel Syndrome based on Patient Reported Outcome Measurements N.H.A. Mendelaar1,2,3, C.A. Hundepool1, L. Hoogendam1,2,3, L.S. Duraku1,3, D.M. Power4, E.T. Walbeehm3,5, R.W. Selles1,2 , J.M. Zuidam1, the Hand-Wrist Study Group | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC - University Medical Centre Rotterdam, The Nether- lands; 2Department of Rehabilitation Medicine, Erasmus MC - University Medical Centre Rotterdam, The Netherlands; 3Hand and Wrist Centre, Xpert Clinic, The Netherlands; 4Birmingham Hand Centre, University Hospitals Birmingham, NHS Foundation Trust; 5Peripheral Nerve centre, Radboudumc, Nijmegen, the Netherlands A-0284 Hyper-selective ulnar nerve neurectomy at the wrist, proximal to Guyon’s canal, a point of technique that has been developed based on cadaveric dissections and the Oswestry experience of applying this procedure Soha Sajid, Jefin Jose, Simon Pickard | Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, SY10 7AG A-0866 CTS 01 / CuTS session commentary Stephanie Zielinski Channel 4 18:00-19:00 S21 Outcome measurements Chair: Çiğdem Öksüz A-0317 Test-Retest Reliability and Construct Validity of the Satisfaction with Treatment Result Questionnaire in Patients with Hand and Wrist Conditions: a Prospective Study Willemijn De Ridder1,2,3,4, Yara Van Kooij1,2,4, Guus Vermeulen3, Harm Slijper1,2,3, Ruud Selles1,2, The Hand-Wrist Study Group Collaborators; Robbert Wouters1,2,4 | 1Department of Plastic, Reconstruc- tive and Hand Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Nether- lands; 2Department of Rehabilitation Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, The Netherlands; 4Center for Hand Therapy, Handtherapie Nederland, Utrecht, The Netherlands A-0382 Predicting symptom improvement after carpal tunnel release: a machine learning approach L Hoogendam1,2,3, JAC Bakx1,2,3, JS Souer3, HP Slijper3, the Hand Wrist study group, RW Selles1,2 | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Nether- lands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, the Netherlands A-0038 Measurement properties of the EQ-5D-5L questionnaire in patients after thumb carpometacarpal arthroplasty, rotator cuff repair or shoulder arthroplasty Miriam Marks, Cécile Grobet, Laurent Audigé | Schulthess Klinik, Zurich, Switzerland A-0528 Measurement properties of the Michigan Hand Outcomes Questionnaire: Rasch analysis of responses from a traumatic hand injury population Maryam farzad, Joy Macdermid, Amirreza kachooei, Erfan Shafiee | School of Rehabilitation Science, McMaster University, Hamilton, Ontario Canada, 2. Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, ON Canada 28 A-0633 A systematic review of health utilities and their derivation methods for hand conditions Luke Geoghegan1, Conrad J Harrison2, Jeremy N Rodrigues2,3 | 1Section of Vascular Surgery, Divi- sion of Surgery and Cancer, Imperial College London. London, UK; 2Nuffield Department of Ortho- paedics, Rheumatology and Musculoskeletal Sciences, University of Oxford. Oxford, UK; 3Department of Plastic, Reconstructive and Hand Surgery. Stoke Mandeville Hospital. Aylesbury, UK A-0329 Psychometric qualities of the PRWHE-DLV in patients with wrist complaints in secondary care. E.J. Perpétua Alvino1, P. Krastman,3, J. Runhaar,3, J.W. Colaris,2, G. Kraan1, N. M.C. Mathijssen1 | 1Reinier de Graaf Groep, Delft, the Netherlands, Department of Orthopaedic Surgery. Reinier de Graafweg 5-11, 2625 AD Delft, the Netherlands; 2Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of Orthopaedics. Department of General Practice. Room NA1920 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 3Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of General Practice. Room NA1911 PO Box 2040, 3000 CA Rotterdam, the Netherlands A-0366 Validation of Patient Rated Wrist/ Hand Evaluation: Confirmatory Factor analysis and Rasch analysis Maryam Farzad1,3, Joy MacDermid1,2, Ze Lu1, Erfan Shafiee1 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, Canada; 2Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, Ontario, Canada; 3University of social welfare and rehabilitation sciences, Tehran, Iran A-0318 Which Factors Independently Contribute to Satisfaction with Treatment Result Following Common Treatments for Hand and Wrist Conditions? A Large Cohort Analysis. Willemijn De Ridder1,2,3,4, Robbert Wouters1,2,4, Lisa Hoogendam1,2,3, Guus Vermeulen3, Harm Slijper1,2,3, The Hand-Wrist Study Group Collaborators, Ruud Selles1,2 | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, The Netherlands; 4Center for Hand Therapy, Handtherapie Nederland, Utrecht, The Netherlands A-0427 DETERMINATION OF THE MINIMALLY IMPORTANT CHANGE OF THE MICHIGAN HAND OUTCOMES QUESTIONNAIRE FOR SEVENTEEN DIAGNOSIS TREATMENT COMBINATIONS Jaimy E Koopman1,2,3, Lisa Hoogendam1,3, Yara E van Kooij1,2,4, Ruud W Selles1,2, Harm P Slijper1,2,3, Reinier Feitz3, Robbert M Wouters1,2,4 | 1Department of Plastic, Reconstructive Surgery and Hand Surgery, Erasmus Medical Centre, Rotterdam, The Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, University Medical Center Rotterdam, the Netherlands; 3Hand and Wrist Center, Xpert Clinic, the Netherlands; 4Center for HandTherapy, Handtherapie Nederland, Utrecht, The Netherlands

29 A-0168 Psychometric qualities of the PRWHE-DLV in patients with wrist complaints in primary care. Britt van Gorp1, Patrick Krastman1, Gerald Kraan3, Nina M.C. Mathijssen3, Sita M.A. Bierma- Zeinstra1,2, Jos Runhaar1 | 1 Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of General Practice. Room NA1911 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 2 Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of Orthopaedics. Department of General Practice. Room NA1920 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 3 Reinier de Graaf Groep, Delft, the Netherlands, Department of Orthopaedic Surgery. Reinier de Graafweg 5-11, 2625 AD Delft, the Netherlands A-0880 Outcome measurements session commentary Çiğdem Öksüz Channel 1 19:00-19:30 S22 DRF malunion Moderators: Frederik Verstreken, Simon Roner A-0836 Free Hand Distal Radius Malunion Correction Alberto Lazzerini A-0837 3D planning for correction osteotomies of the distal radius Andreas Schweizer 19:30-20:00 S23 Wrist Arthritis Moderators: Max Haerle, Marina Brndusic Experts: - Ole Reigstad - Ilse Degreef - Aude Lombard

Surgical techniques: - Arthrodesis - Arthroplasty - Denervation A-0838 Wrist Arthritis 1 Ole Reigstad A-0839 Wrist Arthritis 2 Ilse Degreef A-0840 Wrist Arthritis 3 Aude Lombard

30 20:00-20:30 S24 SL dissociation Moderators: Carlos Heras-Palou, Michiel Cromheecke A-0841 SL dissociation 1 Mireia Esplugas A-0842 SL dissociation. Open Approach Igor Golubev 20:30-21:00 S25 DRU instability Moderators: Jan-Ragnar Haugstvedt, Eske Brand Experts: - Eva-Maria Baur - Reinier Feitz

Surgical techniques: - Open TFSS reinsertion - Arthroscopic TFSS reinsertion A-0843 DRU instability 1 Eva-Maria Baur A-0844 DRU instability 2 Reinier Feitz 21:00-21:30 S26 CMC arthritis Moderators: Daniel Herren, Kyriasis Experts: - Rasmus Thorkildsen - Ana Pinto - Filippos Giannoulis

Surgical techniques: - Resection arthroplasty - Implant arthroplasty - Resection Arthroplasty with Suspension interposition A-0845 CMC arthritis 1 Rasmus Thorkildsen A-0846 Resection Arthroplasty with Suspension interposition- Triple A Technique Ana Pinto A-0847 CMC arthritis 3 Filippos Giannoulis

31 21:30-22:00 S27 Neuroma Moderators: Maurizio Calcagni, Alessandro Crosio A-0848 Neuroma resection Sofija Pejkova A-0849 TMR surgery for neuroma pain Norbert Kang A-0850 Nerve reconstruction Hanna-Stiina Taskinen

32 FESSH 2021 PROGRAM friday, 18 June 2021

Hours CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 S28 07:00-09:00 Instructional Course 2 S29 09:00-11:30 Live surgery 3 S30 S31 S32 S33 S34 11:30-12:30 Free Papers 10 Free Papers 11 Free Papers 12 Free Papers 13 Free Papers 14 12:30-14:00 Industry Sponsored Program S36 S37 S38 S39 S40 14:00-15:00 Free Papers 15 Free Papers 16 Free Papers 17 Free Papers 18 Free Papers 19 S41 15:00-17:30 Live surgery 4 S42 S43 S44 S45 17:30-18:30 Free Papers 20 Free Papers 21 Free Papers 22 Free Papers 23 18:30-19:00 Meet the Industry 19:00-20:00 S49 - S88 S47 - S50 - S53 S48 - S51 - S54 Complicated cases 20:00-21:00 Nerve Round Wrist Round Round tables tables tables 21:00-22:00

33 friday, 18 June 2021

Channel 1 07:00-09:00 S28 Instructional Course 2 A-0707 Distal radius malunion: ten years of experience in 3-dimensional radius reconstruction. Pitfalls, complications, tips and tricks Simon Strackee A-0708 Management of Distal Radius Malunion: Practical Guidelines Frederik Verstreken A-0709 Complications after PIP arthroplasty Daniel Herren A-0710 Management of Complications of Thumb CMC Surgery Filip Stockmans A-0711 Treatment of Complications of Midcarpal Joint Arthritis Eva-Maria Baur, Riccardo Luchetti | Germany A-0712 Management of complications after commonly performed salvage procedures of the radiocarpal and distal radioulnar joint Michel E. H. Boeckstyns A-0713 Management of complications of ligament repair of thumb Mike Ruettermann A-0714 Complications after scapholunate ligament repair Alex Lluch A-0715 Management of Complications Following TFC Surgery Greg Bain, Andrea Atzei A-0716 Dermatofasciectomy and skin grafting Paul Werker, Ilse Degreef A-0717 Management of Complications in the Treatment of Fingertip Injuries Maurizio Calcagni

34 9:00-11:30 S29 Live surgery 3 9:00-10:00 Moderators onsite: Anne Vochteloo - Jan Debeij Experts online: Jan-Ragnar Haugstvedt - Maurizio Calcagni

Table I: Distal Radio Ulnar Joint arthroplasty Ulnar head implant Total DRU Surgeons: Simon Strackee - Arnold Schuurman

Table II: Scaphoid fractures Screw Open and bone graft with plate Surgeons: Brigitte van der Heijden - Alex Lluch 10:30-11:30 Moderators onsite: Miryam Obdeijn - Assa Braakenburg Expert online: Dominic Power

Table I: Nerve Nerve reconstruction, neuroma treatment Surgeons: Erik Walbeehm - Mick Kreulen

Table II: Nerve Nerve reconstruction, neuroma treatment Surgeons: Henk Coert - Xander Smit 11:30-12:30 S30 Scaphoid Chair: Shai Luria A-0193 Wrist Angle Measurements in Predicting the Presence of a Scaphoid Fracture Ronit Wollstein1, Jacob Becker1, Andrew Brash,1 Raj Karia1, Shai Luria,2 | 1NYU Langone School of Medicine; 2Hadassah Medical Center A-0618 Clinical dilemma: Should we operate patients with scaphoid nonunion and good preoperative PRWHE scores to prevent progressive osteoarthritis? Abigael Cohen1, Max Reijman1, Ruud W Selles1, Steven E R Hovius2, the Hand-Wrist Study Group Collaborators, Joost W Colaris1 | 1Erasmus MC, Rotterdam, the Netherlands; 2Xpert Clinic, Hand and Wrist Surgery, the Netherlandsrn A-0220 Pedicled vascularized bone graft for 100 refractory scaphoid nonunions Keikichi Kawasaki1, Takeshi Sakai1, Wakako Sakamoto1, Takuma Kuroda2, Sadaaki Tsutsui2, Gaku Niizuma2, Tetsuya Nemoto2, Kazutoshi Kubo3, Tomohiro Yasuda4, Katsunori Inagaki2 | 1Showa Univesity Yokohama Northern Hospital, Yokohama, Japan; 2Showa University, Tokyo, Japan; 3Showa University Koutou Toyosu Hospital, Tokyo, Japan; 4Showa University Fujigaoka Hospital, Yokohama, Japan

35 A-0578 Two Headless Compression Screw or Angular Stable Plate fixation in Scaphoid Nonunions Stefan Quadlbauer1,2,3, Christoph Pezzei1, Thomas Beer1, Rudolf Rosenauer1,2,3, Josef Jurkowitsch1, T. Hausner1,2,3, M. Leixnering1 | 1AUVA Trauma Hospital Lorenz Böhler, Vienna, Austria; 2Ludwig Boltzmann Institute of Experimental and Clinical Traumatology, AUVA Research Center, Vienna, Austria; 3Austrian Cluster for Tissue Regeneration, Vienna, Austria A-0454 Arthroscopic grafting of scaphoid nonunion – A Retrospective study of 32 cases. Simon Rattier1, MD, Emmanuel David1, MD, Benjamin Haddad1, MD, Axel Van Vliet1, MD, Vittorio Ferrari1,2, MD, Thierry Aihonnou2, MD, Vladimir Rotari1,2, MD | 1 Centre Hospitalo Universitaire Amiens Picardie, France; 2 Clinique Victor Pauchet, Amiens, France A-0517 Is Adaptive Proximal Scaphoid Implant (APSI) a valid option for SNAC wrist also in young patients? A case series Vincent Mazzone1, Marco D’Orio2, Arturo Militerno1, Federico Terribile3, Rocco De Vitis1 | 1Fon- dazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Roma, Italia; 2Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italia; 3Dipartimento di Ortopedia e Traumatologia, ASST - Ospedale Maggiore, Largo Dossena 2, 26013 Crema, Italia A-0881 Scaphoid session commentary Shai Luria Channel 2 11:30-12:30 S31 Education / skill / biomechanics / tendon repair Chair: Simon Farnebo A-0504 MENTORSHIP IN HAND SURGERY: CROSS-SECTIONAL SURVEYS OF MENTORS AND MENTEES Dominique Hughes1, Helen Wohlgemut1, Andrew Hart1, Jeffrey Janis2 | 1Canniesburn, Plastic Surgery Unit, Glasgow Royal Infirmary;2 Ohio State University A-0119 Practice makes perfect: A review of published tendon trainer repair models. Zak Vinnicombe1, Christian M. Asher2, Jonathan Super3, Nicola Bystrzonowski4, Eyfrossini Katsarma2 | 1St. George's Hospital, London, UK; 2Chelsea and Westminster Hospital, London, UK; 3Maidstone and Tunbridge Wells NHS Trust, Kent, UK; 4The Royal London Hospital, London, UK. A-0670 What benefits can be expected from the improvement of surgeon-patient relationships? A literature review. C Girault1, C Chaves2, T Dubert2 | 1Réseau Prévention Main Ile de France, Paris, France; 2Hôpital privé Pauld'Egine, Champigny sur marne, France A-0171 The upper limb falling reflex; the dynamics of how we fall Grey Giddins, Hugo Giddins | Royal United Hospitals, Bath, BA1 2BT A-0567 Biomechanical study of wrist pain and instability in Ehlers-Danlos Syndrome Authors: Marta Jokiel1,2, Piotr Czarnecki1, Ewa Bręborowicz1, Aleksandra Bartkowiak1, Anna Wachowiak1, Leszek Romanowski1 | 1Traumatology, Orthopedics and Hand Surgery Department Poznan, University of Medical Sciences; 2Physiotherapy Clinic, Poznan University of Medical Sciences; Traumatology, Orthopedics and Hand Surgery Department, Poznan University of Medical Sciences 36 A-0401 Evaluation of the effects of donor muscle strength and wrist range of movement in restoring finger extension using computer modelling Joanne Laing J1, Simon Pickard2, Dimitra Blana1, Ed Chadwick1 | 1School of Engineering, University of Aberdeen; 2Robert Jones Agnes Hunt Orthopaedic Hospital, Oswestry, United Kingdom A-0658 Using elastic vessel loops to determine the passive tension at which tendon transfers are set for radial nerve palsy Nikita Blake1, Craig Andrew Blake2, Gideon Francois van Staden2, Corne Pieter Gustav Nel1 | 1De- partment of Plastic and Reconstructive Surgery, University of the Free State, Bloemfontein, South Africa; 2Department of Orthopaedic Surgery, University of the Free State, Bloemfontein, South Africa A-0872 Education / skill / biomechanics / tendon repair session commentary Simon Farnebo Channel 3 11:30-12:30 S32 Dupuytren Chair: David Warwick A-0105 Dupuytren’s disease in the UK: Prevalence, incidence, and lifetime risk of surgical intervention - A population-based cohort analysis Dieuwke Broekstra1,2, Rachel Kuo1, Edward Burn1, Daniel Prieto-Alhambra1, Dominic Furniss1 | 1University of Oxford, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Oxford, United Kingdom; 2University of , University Medical Center Groningen, Department of Plastic Surgery, Groningen, the Netherlands A-0443 Changing patterns of treatment for Dupuytren´s contracture - a retrospective and economic study of the introduction of needle fasciotomy in western Sweden 2010-2018. Joakim Strömberg1,2, Martin Byström,2,3 Johanna Nilsson1, Anna Zachrisson4, Per Holmdahl5 | 1Department of Orthopedics and General Surgery, Alingsås lasarett, Sweden; 2Department of Ortho- paedics, Sahlgrenska Academy, University of , Sweden; 3Department of Hand Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden; 4Department of Orthopedics and General Surgery, Kungälvs sjukhus, Sweden; 5SportMed clinic, Carlanderska Hospital, Gothenburg, Sweden A-0058 Genetic risk predictors of clinical characteristics and recurrence of Dupuytren disease Sophie Riesmeijer1, Ilja Nolte1, Paul Werker1, Roel Ophoff2 | 1University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; 2University of California Los Angeles, Center for Neurobehavioral Genetics, California, of America A-0332 Study of Dupuytren’s contracture in Japan Masashi Matsuta, Kaoru Tada, Shinji Miwa, Mika Nakada, Atsuro Murai, Yuta Nakamura, Hiroyuki Tsuchiya | Department of Orthopaedic Surgery, Graduate School of Medical Science Kanazawa University

37 A-0345 Limited progression of subclinical Dupuytren’s disease: results from a prospective cohort study Bente van den Berge, Paul Werker, Dieuwke Broekstra | University Medical Center Groningen, Groningen, the Netherlands A-0513 Pushing boundaries in using collagenase: two step technique for severe Dupuytren disease M.Bertolini, F.Giacalone, E.Dutto, B.Battiston | Hand Surgery Department, Città della salute e della Scienza di Torino, Turin, Italy A-0403 No difference in recurrence rate and sustained straightness between collagenase treatment and needle fasciotomy for Dupuytren´s Contracture - a five-year follow-up of a randomized study Martin Byström1,3, Allan Ibsen1, Kristian Samuelsson2,3, Jan Fridén2,4 Joakim Strömberg3,5 | 1Department of Hand Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden; 2Department of Orthopaedics, Sahlgrenska University Hospital, Göteborg, Sweden; 3Department of Orthopae- dics, Sahlgrenska Academy, University of Gothenburg, Sweden; 4Swiss Paraplegic Centre, Nottwil, Switzerland; 5Department of Orthopedics and General Surgery, Alingsås lasarett, Sweden A-0470 A randomised, double-blind, placebo-controlled study of celecoxib after collagenase injection for patients with Dupuytren’s contracture at high risk of recurrence Maarten VanNuffel, Pieter Reyniers, Jaak Warlop, Ilse Degreef | University Hospi- tals , Leuven, Belgium A-0871 Dupuytren session commentary David Warwick Channel 4 11:30-12:30 S33 DRUJ Chair: Angel Ferreres A-0067 Long-term outcome of distal oblique bundle reinforcement for chronic bidirectional DRUJ instability after TFCC injury. Pascal Hannemann, Jan Ten Bosch | Maastricht University Medical Center, Maastricht, Netherlands A-0570 Biomechanical comparison of modified Adams-Berger and DX technique in DRUJ reconstruction Istvan Zoltan Rigo1,2, Felix Riano3, Robert Kalapos3, Jan-Ragnar Haugstvedt1,2 | 1Ostfold Hospital Trust, Moss, Norway; 2Oslo Hand Center, Norway; 3Arthrex Inc., Naples, Fl, USA A-0292 The effect of TFCC injury and ulnar styloid fracture on the DRUJ stability in the distal radius fractures -The evaluation using DRUJ arthroscopy- Yoshihiro Dohi | Yao Tokushukai General Hospital, Yao, Japan

38 A-0390 Factors associated with the return to work after ulna shortening osteotomy: a sample of 104 consecutive patients. JS Teunissen1, R Feitz1,2, S Al Shaer3, SER Hovius1,2, RW Selles4,5, EPA van der Heijden1,6 | 1Depart- ment of Plastic surgery, Radboudumc, Nijmegen, The Netherlands; 2Hand and Wrist Center, Xpert Clinic, The Netherlands; 3Department of Plastic surgery, Ziekenhuisgroep Twente, Almelo, The Neth- erlands; 4Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Netherlands; 5Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands; 6Department of Plastic surgery, Jeroen Bosch Ziekenhuis, 's-Hertogenbosch, The Netherlands A-0388 Illness perception is associated with pain and function in patients with ulnar impaction syndrome scheduled for ulna shortening osteotomy: a cross- sectional study JS Teunissen1, MJW van der Oest2,3, DE van Groeninghen1, R Feitz1,3, SER Hovius1,3, EPA van der Heijden1,4 | 1Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Plastic Surgery, Nijmegen, The Netherlands; 2Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, University Medical CentreRotterdam, Rotterdam, The Netherlands; 3Hand and Wrist Centre, Xpert Clinic, The Netherlands; 4Department of Plastic Surgery, Jeroen Bosch Ziekenhuis, ‘s-Hertogenbosch, The Netherlands A-0426 Are there Advantages of Partial Ulnar Head Prostheses compared to Total Ulnar Head Prostheses? Lea Estermann, Lisa Reissner, Ladislav Nagy | Balgrist University Hospital, Zurich, Switzerland A-0870 DRUJ session commentary Angel Ferreres Channel 5 11:30-12:30 S34 Elbow / Humerus Chair: Jan Debeij A-0378 Clinimetric Testing of the Persian version of the Patient-Rated Tennis Elbow Evaluation (PRTEE) and the Disabilities of the Arm, Shoulder, and Hand (DASH) Questionnaires in Patients with Lateral Elbow Tendinopathy Maryam Farzad1,3, Joy C MacDermid1,2, Erfan Shafiee1 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, Canada; 2Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, Ontario, Canada; 3University of social welfare and rehabilitation sciences, Tehran, Iran A-0654 Endoscopic Treatment of Lateral Epicondylitis: A Cadaveric Study Justin Mirza, Ather Mirza, Luke Zappia, Terence Thomas | Mirza Orthopedics, Smithtown, NY, USA A-0085 Comparing Heterotopic Ossification Prophylaxis Options for Elbow Trauma: A Meta-Analysis JEFFREY HESTENBURG, ASIF ILYAS | The Rothman Institute at Thomas Jefferson University Philadel- phia, PA, USA

39 A-0140 Surgical management of persistent dislocation of ulnohumeral joint after failed surgery for fracture-dislocation of the elbow Young Ho Lee1, Goo Hyun Baek1, Jihyeung Kim1, Ji Sup Hwang1, Jung Eun Lee2 | 1Seoul National University Hospital, Seoul, South Korea; 2Gachon Gill Hospital, Gyeonggi-do, South Korea A-0259 Time until union in Absolute vs. Relative Stability in 12A1 and 12A2 humeral fractures Ignacio Rellán1, Gerardo Luis Gallucci1, Agustin Guillermo Donndorff1, Pablo De Carli1, Ezequiel Ernesto Zaidenberg1, Marc Joseph Richard2, Jorge Guillermo Boretto1 | 1Department of Orthopae- dics, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina; Instituto de Ortopedia y Trauma- tología “Carlos E. Ottolenghi,” Potosí 4215 (C1199ACK), Buenos Aires, Argentina; 2Department of Orthopaedic Surgery, Division of Hand, Upper Extremity, and Microvascular Surgery, Duke University Medical Center, 4709 Creekstone Drive, Suite 200, Durham, NC 27703, USA.) A-0873 Elbow / Humerus session commentary Jan Debeij Channel 1 12:30-12:50 Industry sponsored program Channel 2 13:00-13:50 Industry sponsored program Channel 3 13:00-13:30 Industry sponsored program Channel 1 13:30-13:50 Industry sponsored program Channel 1 14:00-15:00 S36 Fractures metacarpal /phalanges Chair: Pascal Hannemann A-0563 Acute injuries to the ulnar collateral ligament of the thumb: a systematic literature review of diagnostic studies Nicholas G Rabey1, Jordan Oldbury2, Neal Thurley3, Nicholas Riley4, Jeremy Rodrigues5,6, Benjamin JF Dean6 | 1University Hospital Coventry, UK; 2Ninewells Hospital, Dundee, UK; 3Bodleian Library, University of Oxford, UK; 4Nuffield Orthopaedic Centre, Oxford, UK;5 Stoke Mandeville Hospital, Aylesbury, UK; 6NDORMS, Nuffield Orthopaedic Centre, Oxford, UK A-0164 Intramedullary screw fixation of metacarpal and phalangeal fractures – a systematic review of 682 patients Rémy Liechti, Armin Pallaver, Fabrizio Fiumedinisi, Bryan Van de Wall, Frank Beeres, Thomas Giesen, Urs Hug | Cantonal Hospital of Lucerne, Switzerland

40 A-0088 Intramedullary Screw Fixation of Metacarpal Fractures: An Anatomic Analysis for Optimal Screw Choice MICHAEL OKOLI, ASIF ILYAS, CHRISTOPHER JONES | The Rothman Institute at Thomas Jefferson University Philadelphia, PA, USA A-0150 High-energy, focussed shock wave therapy (ESWT) for delayed bone healing or non-union of forearm and hand Marion Mühldorfer-Fodor, Eva Liedl, Jörg van Schoonhoven, Karl Josef Prommersberger | Klinik für Handchirurgie des Rhön-Klinikum Campus Bad Neustadt, Germany A-0383 Indication extent for posttraumatic mutilated hand reconstruction by microsurgical toe transfer Stamate T.1, Mazilu G.1, Atănăsoae I.1., Stamate Mariana2, Hrișcă T.1, Topa I.1 | 1University of Medicine and Pharmacy “Gr.T.Popa” , Iasi, Romania; 2Laboratory of Neurophysiology, Neurosurgery Hospital, Iasi, Romania A-0503 Pedicled partial FDS muscle flap for coverage of Median nerve in the distal forearm Kebrle Radek1,2, Martin Czinner1,2,3, Tomas Hellmuth2 | 1Klinika Dr. Pírka Mlada Boleslav; 2UPCHR Vysoke nad Jizerou; 3Nemocnice Liberec A-0428 Use of the Keystone Design Perforator Island Flap for Reconstruction of Upper Limb Defects Nikolovska Bisera, Georgieva Gordana, Srbov Blagoja,Jovanovska Katerina, Pejkova Sofija | University Clinic for Plastic and Reconstructive Surgery, Skopje, North Macedonia A-0874 Fractures metacarpal /phalanges session commentary Pascal Hannemann Channel 2 14:00-15:00 s37 Tendon / Pulley Chair: Hebe Désirée Kvernmo A-0245 Biomechanical evaluation comparing Pulvertaft weave and Side-to-Side tenorrhaphy using porcine tendons Soha Sajid, Emily Day, Jan Herman Kuiper, Rohit Singh, Simon Pickard | Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, SY10 7AG A-0128 Biomechanical analysis of a single-sided locking side-to-side suture technique for tendon transfers Jaimy Koopman1, Caroline Hundepool1, Liron Duraku1, Mick Kreulen2, Michiel Zuidam1 | 1Depart- ment of Plastic, Reconstructive Surgery and Hand Surgery, Erasmus Medical Centre, Rotterdam, The Netherlands; 2Department of Hand Surgery, Rode Kruis Ziekenhuis, Beverwijk, The Netherlands

41 A-0238 A systematic review of outcome measurement in studies of adult hand flexor tendon injury Abigail V Shaw1, David GW Holmes2, Matthew D Gardiner3,4, Jeremy N Rodrigues1,4, Jennifer CE Lane4, Justin CR Wormald4 | 1Department of Plastic & Reconstructive Surgery, Stoke Mandeville Hospital, Aylesbury, UK; 2Department of Trauma & Orthopaedic Surgery, Leighton Hospital, Crewe, UK; 3 Department of Plastic & Reconstructive Surgery, Wexham Park Hospital, Slough, UK; 4Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science (NDORMS), University of Oxford, Oxford, UK A-0070 Alternative for two-stage tendoplasty in treatment of chronic tendon flexor digitorum profundus injury in no-man's land Aleksandr Zenchenko | Gomel Regional Clinical Hospital (Gomel, Belarus) A-0236 SORL-reverse procedure: a dynamic tenodesis to restore distal interphalangeal joint flexion in chronic flexor digitorum profundus lesions. A cadaveric study Andrea Poggetti, Nucci Anna Maria, Biondi Marco, Pfanner Sandra | Hand and Reconstructive Microsurgery Unit, AOU Careggi-CTO, Florence, Italy A-0107 Flexor pulley reconstruction – clinical results for chronic cases: 5-years follow-up Simon Oeckenpöhler, Valerie Nottberg, Johanna Ueberberg, Britta Wieskötter, Martin Langer | University Hospital Münster - Department for Trauma-, Hand- and Reconstructive Surgery, Münster, Germany A-0020 Repair of ruptured extensor pollicis longus with interlocking horizontal mattress suture technique Satoshi Usami, Sanshiro Kawahara, Masashi Takemitsu, Kohei Inami. | Tokyo Hand Surgery ampersand Sports Medicine Institute, Takatsuki Orthopaedic Hospital, Tokyo, Japan. A-0883 Tendon / Pulley session commentary Hebe Désirée Kvernmo Channel 3 14:00-15:00 s38 Nerve experimental / Allograft Chair: Esther Vögelin A-0173 Alterations in Myelinisation of the Painful Nerves, Proximal to the Site of Injury Elisabeth Maria Brakkee1, Wim Van Hecke1, Erick DeVinney2, Henk Coert1 | 1University Medical Center Utrecht, the Netherlands, 2AxoGen, Alachua, Florida, United States A-0247 Enhancing Acellular Nerve Allografts with Mesenchymal Stem Cells and Surgical Angiogenesis Improves Immune Response and Revascularization Meiwand Bedar, Tiam M. Saffari, Allen T. Bishop, Alexander Y. Shin | Department of Orthopedic Surgery, Division of Microvascular and Hand Surgery, Mayo Clinic, Rochester, MN, USA

42 A-0463 The effect of stem cells and local tacrolimus on neurite extension Sara Saffari1,2, Tiam M. Saffari1,2, Katelyn Chan3,4, Gregory H. Borschel3, Alexander Y. Shin1 | 1Division of Hand and Microvascular Surgery, Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA; 2Department of Plastic-, Reconstructive- and Hand Surgery, Radboud University, Nijmegen, the Netherlands; 3Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, , Ontario, Canada; 4Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada A-0404 Surgical Angiogenesis Modifies the Cellular Environment of Decellularized Nerve Allografts in a Rat Sciatic Nerve Defect Model Tiam Mana Saffari1,2, Femke Mathot,1,2, Allen T. Bishop1, Andre J. van Wijnen1,3, Alexander Y. Shin1 | 1Mayo Clinic, Department of Orthopedic Surgery, Minnesota, USA; 2Radboud University, Nijmegen, the Netherlands; 3Mayo Clinic, Department of Biochemistry and Molecular Biology, Minnesota, USA A-0400 Microcomputed analysis of nerve angioarchitecture after combined stem cell delivery and surgical angiogenesis to nerve allograft Tiam Mana Saffari1,2, Femke Mathot1,2, Allen T. Bishop1, Alexander Y. Shin1 | 1Mayo Clinic, Min- nesota, USA; 2Radboud University, Nijmegen, The Netherlands A-0069 Peripheral Nerve Regeneration with Enhanced Nerve Autograft using Adipose- derived Stem Cell Sheets Atsuro Murai, Kaoru Tada, Mika Nakada, Masashi Matsuta, Yuta Nakamura, Hiroyuki Tsuchiya | Department of Orthopaedic Surgery, Graduate School of Medical Science Kanazawa University, Kanazawa, Ishikawa, Japan. A-0045 Peripheral Nerve Regeneration Using an Adipose-Derived Stem Cell Sheet Kaoru Tada1, Atsuro Murai1, Mika Nakada1, Masashi Matsuta1, Yuta Nakamura1, Katsuhiro Hayashi1, Hiroyuki Tsuchiya1 | 1Department of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University A-0543 Median Nerve Injury in Wistar Rats Treated with GM1: Functional Evaluation Osvaldo Mendes de Oliveira Filho (Oliveira Fiho, OM)1, Márcia dos Santos Rizzo (Rizzo, MS)1, Antônio César Almeida de Oliveira (de Oliveira, ACA)1, Gustavo Bispo dos Santos (dos Santos, GB),2, William Dias Belangero (Belangero, WD)3 | 1Universidade Federal do Piauí (UFPI), Teresina, Brazil; 2Universidade de São Paulo (USP), São Paulo, Brazil; 3Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil A-0380 Avoiding nerve suture line tension using Jabaley epineurial splint technique Teodor Stamate1, Mariana Stamate2 , Ionuț Atănăsoae1, Ionut Topa1 | 1University of Medicine and Pharmacy “Grigore T.Popa” IASI, Romania; 2Laboratory of Neurophysiology – Neurosurgery Hospital, IASI, Romania A-0878 Nerve experimental / Allograft session commentary Esther Vögelin

43 Channel 4 14:00-15:00 S39 SL ligament TFCC Chair: Fernando Corella A-0665 Diagnostic accuracy of MRI and MR Arthrography in Scapholunate Interosseous Ligament Injury: A Systematic Review and Meta-Analysis Philippe Sprangers, Stan Buckens, Stefan Hummelink, Brigitte van der Heijden | Radboudumc, Nijmegen, The Netherlands A-0667 Arthroscopy Capsuloplasty and Temporary Screw augmentation in S-L tears grade IIIC & IV of the EWAS Classification. Medium term follow Up Martín Caloia, Sergio Ronconi, Hugo Caloia, Diego González Scotti, Germán Barrozo, Emilia María Serur, Stevent García Puerta, Gerónimo Chamorro, Alejandro Meritano, Gonzalo Guevara | Orthopeadic Department, Upper Extremity & Hand Surgery section. Austral University Hospital, Pilar, Buenos Aires, Argentina A-0568 Radiological and functional correlation following scapholunate and intercarpal ligamentoplasty "SLIC procedure" at minimum follow-up of 12 months Florent METAIRIE1, Ludovic ARDOUIN2, Philippe BELLEMERE3, Yves BOUJU4, Etienne GAISNE5, Marc LEROY6 | Institut de la main Nantes Atlantique, ST HERBLAIN, France A-0355 Long-term follow-up of scapho-lunate reconstruction with the DRAW technique N Della Rosa, N Bertozzi, G Colzani, R Adani | Operative Unit of Hand Surgery and Microsurgery Azienda Ospedaliera Policlinico Modena, Italy A-0361 Comparison between dorsal capsuloplasty techniques for chronic injuries of the scapho-lunate ligament: Viegas vs Berger. Norman Della Rosa, Enrico Lancellotti, Daniele Tosi, Roberto Adani | Operative Unit of Hand sur- gery and Microsurgery Azienda Ospedaliera Policlinico Modena, Italy; Department of Orthopaedic Ospedale Santa Maria Nuova Reggio Emila, Italy A-0291 Histological Analysis of the TFCC: An Examination on the Meniscus Homologue, Ulnar Collateral Ligament and Ligament Subcruentum Toshiyasu Nakamura1, David L. Nelson | 1Department of Orthopaedic Surgery, International Univer- sity of Health and Welfare, Tokyo, Japan; 2Private Practice, San Francisco, USA A-0526 Management of Palmer Type 1B TFCC Tears: A Systematic Review of Cadaver Studies Claire Elisabeth Arnolda Koeyvoets1, Joris Sebastiaan Teunissen1, Reinier Feitz1,2,3, Steven Hov- ius1,4, Elisabeth Hagert6,7,8, Egberta Petronella Adriana van der Heijden1,5 | 1Radboud university medical center, Department of Plastic and Reconstructive and Hand Surgery, Nijmegen, The Neth- erlands; 2Radboud university medical center, Radboud Institute for Health Sciences, Department of Plastic, Reconstructive and Hand Surgery, Nijmegen, The Netherlands; 3Hand and Wrist Center, Xpert Clinics, Amsterdam, The Netherlands; 4Hand and Wrist Center, Xpert Clinics, Rotterdam, The Netherlands; 5Jeroen Bosch Hospital, Department of Plastic and Hand Surgery, ‘s Hertogenbosch, The Netherlands; 6Karolinska Institutet, Dept of Clinical Science and Education, Sodersjukhuset, Stockholm, Sweden; 7Arcademy, HM Queen Sophia Hospital, Stockholm, Sweden; 8Musculoskeletal & Sports Injury Epidemiology Center Department of Health promotion science Sophiahemmet University, Stockholm, Sweden 44 A-0373 All Arthroscopic TFCC Fovea Repair with Suture Anchor in Athletes Juitien Shih | Armed Forces Taoyuan General Hospital, Taoyuan, Taiwan A-0321 Arthroscopic isometric inside-out suture technique for TFCC foveal repair Keiji Fujio, Saori Yamaguchi, Kentaro Seki, Kazuaki Tsuyuguchi, Yasuhiko Maki | Orthopaedic department of Osaka Maki Orthopaedic Hospital Osaka, Japan A-0112 Preoperative Patient Reported Wrist Evaluation (PRWE) should guide the indication for open reinsertion of the Triangular Fibrocartilage Complex (TFCC) reinsertion R Feitz1,2,3, YE van Kooij1, MJW van der Oest1,3,4, JS Souer1, SER Hovius1,2, RW Selles3,4, and the Hand-Wrist Study Group | 1Xpert Clinics, Hand and Wrist center, Laarderhoogtweg 12, 1101 EA, Amsterdam,The Netherlands; 2Department of Plastic-, Reconstructive-, and Hand Surgery, Rad- boud University Medical Center, PO Box 9101, 6500 HB Nijmegen, the Netherlands; 3Department of Plastic-, Reconstructive-, and Hand Surgery, Erasmus MC, PO Box 2040, 3000 CA Rotterdam, The Netherlands; 4Department of Rehabilitation Medicine, Erasmus MC, PO Box 2040, 3000 CA , Rot- terdam, The Netherlands; Hand–Wrist Study Group collaborators: RAM Blomme, BJR Sluijter, DJJC van der Avoort, A Kroeze, J Smit, J Debeij, ET Walbeehm, GM van Couwelaar, Guus M Vermeulen, JP de Schipper, JFM Temming, JH van Uchelen, HL de Boer, KP de Haas, K Harmsen, OT Zöphel, JS Souer, R Koch, TM Moojen, X Smit, R van Huis, PY Pennehouat, K Schoneveld, YE van Kooij, RM Wouters, P Zagt, FJ van Ewijk, JJ Veltkamp, A Fink, WA de Ridder, JT Porsius, J Tsehaie, R Poelstra, MC Janssen, PO Sun, VJMM Schrier, L Hoogendam, JS Teunissen, Jak Dekker, M Jansen-Landheer, M ter Stege. A-0882 SL ligament TFCC session commentary Fernando Corella Channel 5 14:00-15:00 S40 Nerve / Pain /Basic Chair: Lars Dahlin A-0270 Microcirculation of Median Nerve in Carpal Tunnel Syndrome Gokce Yildiran1, Nusret Seher2, Mustafa Sutcu3, Osman Akdag3, Alaaddin Nayman2, Zekeriya Tosun3 | 1Konya City Hospital, Hand Surgery Clinic, Konya, Turkey; 2Selcuk University Medical Faculty, Radiology Dep, Konya Turkey; 3Selcuk University Medical Faculty, Plastic, Reconstructive and Aesthetic Surgery Dep, Konya, Turkey A-0159 MR imaging of peripheral nerves using targeted application of contrast agents: an experimental proof-of-concept study Vlad Tereshenko1,2, Irena Pashkunova-Martic3,4, Krisztina Manzano-Szalai1,5, Joachim Friske3, Konstantin D. Bergmeister1,2,6, Christopher Festin1,2, Martin Aman1,2,7, Laura A. Hruby1,8, Johanna Klepetko1, Sarah Theiner4, Matthias H. M. Klose4, Bernhard Keppler4, Thomas Helbich3, Oskar C. Aszmann1,9* | 1Clinical Laboratory for Bionic Extremity Reconstruction, Division of Plastic & Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria; 2Center for Biomedical Research, Medical University of Vienna, Austria; 3Department of Biomedical Imaging and Image-guided Therapy, Division of Molecular and Structural Preclinical Imaging, Medical Uni- versity of Vienna, Austria; 4nstitute of Inorganic Chemistry, University of Vienna, Austria; 5Centre for Microbiology and Environmental Systems Science, University of Vienna, Austria; 6Karl Landsteiner University of Health Sciences, Department of Plastic, Aesthetic and Reconstructive Surgery, Univer- sity Hospital St. Poelten, Krems, Austria; 7Department of Hand, Plastic and Reconstructive Surgery, Burn Center, University of Heidelberg, BG Trauma Hospital Ludwigshafen, Ludwigshafen, Germany; 8Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Austria; 9Division of Plastic and Reconstructive Surgery, Medical University of Vienna, Austria 45 A-0613 Spontaneous autonomic reinnervation of neuromuscular junctions after surgical deefferentation: experimental animal model Vlad Tereshenko1, Joachim Ortmayr1, Dominik Dotzauer1, Udo Maierhofer1, Konstantin D. Bergmeister1,2 Christopher Festin1, Matthias Luft1, Gregor Längle1, Roland Blumer3, Oskar C. Aszmann1,4 | 1Clinical Laboratory for Bionic Extremity Reconstruction, Division of Plastic & Recon- structive Surgery, Department of Surgery, Medical University of Vienna, Austria; 2Karl Landsteiner University of Health Sciences, Department of Plastic, Aesthetic and Reconstructive Surgery, Univer- sity Hospital St. Poelten, Krems, Austria; 3Center for Anatomy and Cell Biology, Medical University of Vienna, Austria; 4Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria A-0172 Treatment Strategies for Injuries of the “Unforgiving” Radial Sensory Nerve Elisabeth Maria Brakkee1, Annemieke Stokvis2, Erick DeVinney3, Ivica Ducic4, Henk Coert1,2 | 1University Medical Center Utrecht, The Netherlands, 2Erasmus MC, University Medical Center, Rot- terdam, The Netherlands, 3AxoGen, Alachua, Florida, United States, 4Washington Nerve Institute, McLean, VA, United States A-0469 Incidence of neuroma at a tertiary hand centre: a review of 418 amputations Sunil Parthiban, James Halle-Smith, Ali Majeed Jawad, Mark Foster, Dominic Power | Department of Hands and Peripheral Nerve Surgery, Queen Elizabeth Hospital Birmingham, Birmingham, UK A-0495 Morbidity and function loss after resection of malignant peripheral nerve sheath tumors Enrico Martin1,2, Courtney Pendleton3, Cornelis Verhoef2, Robert J. Spinner,3, J. Henk Coert1, MO- NACO collaborators | 1University Medical Center Utrecht, The Netherlands; 2Erasmus Medical Center Rotterdam, The Netherlands; 3Mayo Clinic Rochester, MI, United States of America A-0656 MODERN: a prospective multicenter study on outcome-monitoring of trunk nerve lesions of the upper extremity Leila Harhaus1, Martin Aman1, Daniel Schwarz2, Annette Stolle1, Arne Böcker1, Lukas Pindur3 Martin Bendszus2, Ulrich Kneser1 | 1Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Hand- and Plastic Surgery of Heidelberg University, BG Trauma Center Ludwigshafen; 2Department of Neuroradiology, University Hospital Heidelberg; 3Department of Plastic and Reconstructive Surgery, BG Trauma Center Frankfurt A-0152 Acute and long-term costs of 268 peripheral nerve injuries in the upper extremity Konstantin D. Bergmeister,1,2,3, Luisa Große-Hartlage1, Simeon C. Daeschler1, Patrick Rhodius1, Arne Böcker1 Marius Beyersdorff2, Axel Olaf Kern4 Ulrich Kneser1 Leila Harhaus1 | 1 Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Plastic and Hand Surgery, University of Heidelberg; 2 Clinical Laboratory for the Restoration of Extremity Function, Department of Surgery, Medical University of Vienna, Austria; 3 Department of Plastic, Aesthetic and Reconstructive Surgery, University Hospital St. Poelten, Austria; 4 Faculty of Social Work, Health, and Nursing, Hochschule Ravensburg-Weingarten, Weingarten, Germany

46 A-0272 Effect of tourniquet in atraumatic common hand surgery on perioperative pain and short-term patient reported outcomes: a randomized controlled trial Saskia de Roo1, Wouter van Leeuwen1, Brigitte van der Heijden1,2 | 1Jeroen Bosch Hospital, ‘s- Hertogenbosch, The Netherlands; 2Radboud University Medical Center, Nijmegen, The Netherlands A-0877 Nerve / Pain /Basic session commentary Lars Dahlin Channel 1 15:00-17:30 S41 Live surgery 4 15:00-16:00 Moderators onsite: Tjeerd de Jong - Alex Lluch Experts online: Elisabet Hagert - Zaf Naqui

Table I: Ulna plus pathology Ulna shortening plating Surgeons: Assa Braakenburg - Mireia Esplugas

Table II: (Partial) wrist hand fusion (radiocarpal) DIP/IP intramedullary implant Plating (total fusion) Surgeons: Anne Vochteloo - Jan Debeij 16:30-17:30 Moderators onsite: Mireia Esplugas - Joost Colaris Expert online: Jan Debeij

Table I: SLAC/SNAC pathology: radioscaphoid lunate fusion RSL fusion plate RSL screw fixation Surgeons: MIck Kreulen - Xander Smit

Table II: (Partial) wrist fusion (carpal) Screw (four corner) Circular plating (partial) (four corner) Surgeons: Niels Schep - Erik Walbeehm 17:30-18:30 S42 Complex trauma Chair: Pierluigi Tos A-0606 Vein conduits used to improve the reliability of arterial suture repair by microsurgery. Randomised comparative study on rats. Nicolas Bigorre1, Alexandre Petit1, Jérome Jeudy1, Yann Saint Cast1, Jérome Brunet1, Henri Dominique Fournier2 | 1Centre de la Main, Angers, France; 2Laboratoire d'Anatomie - Faculté de Médecine, Angers, France

47 A-0138 Venous congestion complications after digital replantation treated with medicinal leeches Mihaela Pertea1,2, Alina Mihaela Stan2, Dmitrii Leontii2, Diana Al Khazaleh2, Petru Ciobanu1,2 | 1“Grigore T. Popa” University of Medicine and Pharmacy Iasi, Romania; 2Clinic of Plastic Surgery and Reconstructive Microsurgery, \'Sf. Spiridon\' Emergency Hospital, Iasi, Romania A-0268 Increase of Fat Graft Survival by Mesenchymal Stem Cell Recruiting Effect of Platelet Rich Plasma (PRP): in vivo and in vitro Study Gokce Yildiran1, Gulsemin Cicek2, Z. Esin Celik3, Hulya Ozdemir4, Hasibe Artac4, Osman Akdag5, Selcuk Duman6, Mustafa Sutcu5, T. Murad Aktan6, Zekeriya Tosun5 | 1Konya City Hospital, Hand Surgery Clinic, Konya, Turkey; 2Kanuni Sultan Süleyman Training and Research Hospital, Histology and Embriology, Istanbul, Turkey; 3Selcuk University Medical Faculty, Pathology Dep, Konya, Turkey; 4Selcuk University Medical Faculty, Pediatric Immunology and Allergy Dep, Konya, Turkey; 5Selcuk University Medical Faculty, Plastic, Reconstructive and Aesthetic Surgery, Konya, Turkey; 6Necmettin Erbakan University Medical Faculty, Histology and Embriology Dep, Konya, Turkey A-0657 Paediatric composite fingertip grafts: 7-year experience from a tertiary plastic surgery unit and a proposed management algorithm James Carter, Nick Arkoulis | Royal Hospital for Children, Glasgow, UK. A-0863 Complex trauma session commentary Pierluigi Tos Channel 2 17:30-18:30 S43 WALANT / Trigger finger Chair: Mireia Esplugas A-0064 WALANT as a Safe, Reliable and Beneficial Modality for the Trainee Hand Surgeon - Analysis of a Consecutive Personal Patient Series Sebastian Hediger1,2, Dirk J. Schaefer1, Andreas Gohritz1 | 1Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel, Switzerland; 2Department of Hand- and Plastic Surgery, Spital Thurgau AG, Frauenfeld and Münsterlingen, Switzerland A-0336 Trapezo-metacarpal arthroplasty (TMC) under Wide Awake Local Anesthesia with No Tourniquet (WALANT) versus Locoregional anesthesia with peripheral nerve blocks (LAPNV ): result on peri and post-operative pain and early functional result, about 30 cases. Lara Moscato1, A. Laborde1, P. Kouyoumdjian1, R Coulomb1, O. Mares1 | 1CHU de Nîmes, service de chirurgie orthopédique Pr Kouyoumdjian. Avenue du Pr Debré, 30000 Nîmes. France A-0089 Wide Awake Local Anesthesia Surgery with Epinepherine is Safe: A Series of 4,287 Consecutive Hand & Upper Extremity Procedures ASIF ILYAS, JOHN JENNINGS, LAUREN BANNER, JONAS MATZON | The Rothman Institute at Thomas Jefferson University Philadelphia, PA, USA

48 A-0262 What is the Infection Rate in Carpal Tunnel Syndrome and Trigger Finger Release Performed Under Wide Awake Anesthesia? Ignacio Rellán1, Pedro Bronenberg Victorica1, Surya Kohan Fortuna Figueira1, Gerardo Luis Gallucci1, Agustin Guillermo Donndorff1, Pablo De Carli1, Ezequiel Ernesto Zaidenberg1, Jorge Guillermo Boretto1 | 1Department of Orthopaedics, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina; Instituto de Ortopedia y Traumatología “Carlos E. Ottolenghi,” Potosí 4215 (C1199ACK), Buenos Aires, Argentina A-0123 Wide-Awake Hand Surgery Experience in 10 to 18 Years of Age Zeynep Tuna1, Egemen Ayhan2 | 1Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Gazi University, Ankara, Turkey; 2Department of Orthopaedics and Traumatology, Diskapi YB Training and Research Hospital, University of Health Sciences, Ankara, Turkey A-0082 Out–of–sheath corticosteroid injections through the dorsal webspace for trigger finger and trigger thumb. A prospective case series. Isidro Jiménez1,2, José Medina1,2, Alberto Marcos-García1,2, Beatriz Romero1, Gerardo L Garcés2,3 | 1Hospital Universitario Insular de Gran Canaria, Las Palmas de Gran Canaria, Spain; 2Universidad de Las Palmas de Gran Canaria. Las Palmas de Gran Canaria, Spain; 3Hospital Perpetuo Socorro. Las Palmas de Gran Canaria, Spain A-0436 Predicting preoperative pain levels of trigger finger patients scheduled for surgical release: a large cross-sectional study from the Hand and Wrist cohort Daniek J. Bogerd1,2, Christianne A. van Nieuwenhoven1, Mark J. W. van der Oest1,2,3, Ruud W. Selles1,2, Harm P. Slijper1,2,3, Jeroen M. Smit3, Robbert M. Wouters1,2,4, The Hand-Wrist Study Group | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Nether- lands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, The Netherlands; 4Center for Hand Therapy, Handtherapie Nederland, Utrecht, The Netherlands A-0651 Endoscopic Trigger Finger Release: Outcomes of a Novel Minimally Invasive Technique for the Treatment of Stenosing Tenosynovitis Justin Mirza, Ather Mirza, Luke Zappia, Terence Thomas | Mirza Orthopedics, Smithtown, NY, USA A-0884 WALANT / Trigger finger session commentary Mireia Esplugas Channel 3 17:30-18:30 S44 Nerve Transfers Chair: Gürsel Leblebicioğlu A-0094 Anconeus nerv revised Mauro Maniglio1,2,3, Ezequiel Zaidenberg2,4, Ezequiel Martinez4, Carlos Zaidenberg4 | 1CHUV Uni- versity Hospital Lausanne, Switzerland; 2HFR, University Hospital Fribourg, Switzerland; 3Hospital Italiano de Buenos Aires, Argentina; 4Anatomy Department, School of Medicine, University of Buenos Aires

49 A-0497 Novel nerve transfer to the sterno(cleido)mastoid muscle: an experimental animal model for proprioceptive reinnervation Vlad Tereshenko1, Dominik Dotzauer1, Udo Maierhofer1, Christopher Festin1, Matthias Luft1, Gregor Längle1, Olga Politikou1, Konstantin D. Bergmeister1,2, Roland Blumer3, Oskar C. Asz- mann1,4 | 1Clinical Laboratory for Bionic Extremity Reconstruction, Division of Plastic & Reconstruc- tive Surgery, Department of Surgery, Medical University of Vienna, Austria; 2Karl Landsteiner Uni- versity of Health Sciences, Department of Plastic, Aesthetic and Reconstructive Surgery, University Hospital St. Poelten, Krems, Austria; 3Center for Anatomy and Cell Biology, Medical University of Vienna, Austria; 4Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria A-0195 Outcomes of Anterior Interosseous Nerve Transfer to Restore Intrinsic Muscle Function after High Ulnar Nerve Injury Samuel George, Abdus Burahee, Andrew Sanders, Dominic Power | Queen Elizabeth Hospital, Birmingham, UK A-0496 Double nerve transfer for reconstruction of pinch in high ulnar nerve palsy Samuel Hodgson1 Jacek Parylo1 Tahseen Chaudhry2 | 1The Medical School, University of Birming- ham, UK; 2Department of peripheral nerve surgery, University Hospital Birmingham, UK A-0158 Creation of a “Bio-Screen” through Multiple Nerve Transfers to a Single Target Muscle for High Fidelity Prosthetic Control Matthias Luft1,2, Konstantin D. Bergmeister1,2,4, Johanna Klepetko1,2, Vlad Tereshenko1,2, Chris- topher Festin1,2, Gregor Längle1,2, Olga Politikou1,2, Oskar C. Aszmann1,2,3 | 1Clinical Laboratory for Bionic Extremity Reconstruction, Division of Plastic & Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria; 2Center for Biomedical Research, Medical University of Vienna, Austria; 3Division of Plastic and Reconstructive Surgery, Medical University of Vienna, Vienna, Austria; 4Karl Landsteiner University of Health Sciences, Department of Plastic, Aesthetic and Reconstructive Surgery, University Hospital St. Poelten, Krems, Austria A-0254 Treatment of Spastic Forelimb Hypertonia with Cognitive Muscle Reinnervation in Upper Motor Neuron Syndrome Olga Politikou1, Vlad Tereshenko1, Matthias Luft1, Christopher Festin1, Gregor Längle1, Silvia Muceli2, Oskar Aszmann1 | 1Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Austria; 2Electrical Engineering, Chalmers University of Technology, Sweden A-0879 Nerve Transfers session commentary Gürsel Leblebicioğlu

50 Channel 4 17:30-18:30 S45 Kienböck Chair: Matthias Vanhees A-0078 Is core decompression an effective treatment for Kienböck’s disease in middle- aged patients? Mauro Maniglio1,2,3, Ezequiel Zaidenberg3, Thürig Gregoire2, Emanuel Gautier2, Jorge Boretto3, Pa- blo De Carli3 | 1CHUV University hospital Lausanne, Switzerland; 2HFR, University Hospital Fribourg, Switzerland; 3Hospital Italiano de Buenos Aires, University hospital, Argentina A-0093 Is there a correlation between the clinical and radiological outcome after radius core decompression for Kienböck’s disease? Mauro Maniglio,1,2,3, Ezequiel Zaidenberg,2, Simon Roner4, Emanuel Gautier3, Gerardo Gallucci2, Pablo De Carli2 | 1CHUV, University Hospital Lausanne, Switzerland; 2Hospital Italiano de Buenos Aires, Argentina; 3HFR, University hospital Fribourg, Switzerland; 4KSGR, Kanton Hospital Chur, Switzerland A-0163 Is sufficient treatment of Kienböck`s disease possible using the osteochondral flap from the lateral femorla condyle? Christian M Windhofer1,2, Heinz K Bürger3, Alexander Gaggl4 | 1Trauma Department, Unfallkrank- enhaus Salzburg, Austria; 2Ludwig-Boltzmann-Institut for experimental and clinical traumatology, Vienna, Austria; 3Privat Hospital Maria Hilf, Klagenfurt, Austria; 4General Hospital Salzburg, Depart- ment of maxillar surgery, Salzburg, Austria A-0155 Improvement of lunate perfusion after radial closing wedge osteotomy in patients with Kienböck’s disease Jeong Hyun Lee, Yo-Han Lee, Kee Jeong Bae, Jihyeung Kim, Hyun Sik Gong, Young Ho Lee, Goo Hyun Baek, | Department of Orthopaedic Surgery, Seoul National University, College of Medicine, Seoul, South Korea A-0561 Lunate fragmentation in Kienbock’s disease – 29 cases. J.C.Botelheiro Hospital Lusíadas, Lisboa; Hospital de Sant’Ana, Parede, Portugal | Hospital Lusiadas, , Portugal A-0232 Proximal row carpectomy: with or without radial styloidectomy? Geert van Rijt, Robin E. Delnoy, Elske E.D.J. Bonhof-Jansen, Tjeerd R. de Jong | Isala, Zwolle, The Netherlands A-0876 Kienböck session commentary Matthias Vanhees Channel 1 18:30-19:00 S46 Meet the Industry

51 19:00-20:00 S47 Nerve gap and reconstruction (incl allograft) Chair: Lars Dhalin, Bruno Battiston A-0729 Nerve graft - how, when and expected results Erik Walbeehm A-0730 Tubulization - wich, when and why Pierluigi Tos A-0731 Nerve allograft: indication and results Bauback Safa A-0732 Nerve transfers: when and why Jean-Noel Goubier A-0733 Management of painful neuroma Ivica Ducic Channel 2 19:00-20:00 S48 How to manage ulnar sided wrist pain Chair: Alex Lluch, Carlos Heras-Palou, Jan-Ragnar Haugstvedt A-0806 Ulnar sided wrist pain Jan-Ragnar Haugstvedt | Oslo, Norway Q & A from the audience. Clinical cases discussion Channel 3 19:00-20:30 S49 Efficacy and durability of treatment for recurrent Dupuytren’s contracture Chair: Paul Werker A-0762 Problem of the definition of recurrence; results of treatment of recurrences with PNF Paul Werker A-0763 how to handle recurrence following treatment with CCH. When to do what? Short and long term results David Warwick A-0764 Dermofasciectomy and skin grafting. When and how to do it? Short and long term results Ilse Degreef

52 A-0765 Outcome of arthrodesis for severe recurrent proximal interphalangeal joint contractures in Dupuytren's disease. When and how to do it? Short and long term results Michelle Spiteri Channel 1 20:00-21:00 S50 Nerve transfers in OBP: indications, alternatives and results Chair: Francisco Soldado A-0755 SAN-SSN Kevin Little A-0756 Oberlin Jayme Bertelli A-0757 Triceps to axillary Amr El-Sayed A-0758 Intercostals Dan Zlotolow A-0759 Contralateral C7 Gürsel Leblebicioglu A-0760 SAN-infraspinatus / Triceps-Teres minor Francisco Soldado Channel 2 20:00-21:00 S51 Myths and facts about wrist propioception Chair: Alex Lluch, Carlos Heras-Palou A-0810 Wrist proprioception. Fact or myth? Elisabet Hagert | Stockholm, Sweden A-0811 Role of neuromuscular control in the stabilization of ligament-deficient wrists Mireia Esplugas | Barcelona, Spain Q & A from the audience. Clinical cases discussion. Channel 3 20:30-22:00 S88 Recurrent/persistent CMC thumb pain after tra- peziectomy Chair: Flip Stockmans A-0887 Re-suspension options after failed Trapeziectomy Flip Stockmans 53 A-0888 Revisions after failed Resection-Interposition-Arthroplasty of the CMC I joint Daniel Herren A-0889 Surgical options after failed CMC joint total arthroplasty Michel Chammas Channel 1 21:00-22:00 S53 Treatment of recurrent carpal and cubital tunnel Chair: Francisco del Piñal A-0761 Recurrent carpal tunnel Roberto Adani A-0726 IrrItative carpal tunnel syndrme (ICTS) Francisco del Pinal A-0727 Recurrent ulnar tunnel Mike Ruettermann A-0728 Last resort options for failed cubital and carpal tunnel decompression J Henk Coert Channel 2 21:00-22:00 S54 Is there any certainity in Kienböck’s disease Chair: Alex Lluch, Carlos Heras-Palou, Greg Bain A-0808 Kinematics of Kienbock’s Disease Simon MacLean, Greg Bain | Tauranga, New Zealand A-0809 An algorithm for management of Kienbock’s disease Greg Bain | Adelaide, Australia Q & A from the audience. Clinical cases discussion

54 FESSH 2021 PROGRAM saturday, 19 June 2021

Hours CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 07:20-09:00 S55 Instructional S56 - S58 08:00-09:00 Course 3 EWAS lecture 09:00-10:00 S57 sessions S59 S60 - S64 - S68 Patient-reported 10:00-11:00 S62 Pediatric Hand Trauma Round Measures for bet- EWAS Live surgery Surgery tables 11:00-12:00 ter care demonstration S69 S70 S71 S72 12:30-13:30 Free Papers 24 Free Papers 25 Free Papers 26 Free Papers 27 S73 - S75 13:30-14:15 Nation competition S76 15:30-15:45 Closing ceremony

55 saturday, 19 June 2021

Channel 1 07:20-09:00 S55 Instructional Course 3 A-0718 Flexor tendon repair - managing complications Gwendolyn van Strien A-0719 Prevention and management of complications after peripheral nerve surgery; the hand therapy options Ton Schreuders A-0720 Hand therapy. Prevention and management of complications in bone and joint fractures Gert-Jan Kroon, Elske Bonhof-Jansen A-0721 Debunking CRPS Francisco del Pinal A-0722 Management expectations/Factitious disorders Randy Bindra A-0723 Informed consent - preventing medicolegal issues Randy Bindra | Australia A-0724 Complications - what they do to the surgeon David Warwick A-0725 Complications: what is does with the patient Terry Whipple Channel 2 08:00-09:00 S56 Potential Complications of Wrist arthroscopy, and How to avoid and treat? Chair: J Henk Coert, Eva-Maria Baur A-0793 Treatment of distal radio-ulnar joint problems J Henk Coert | The Netherlands A-0794 Complications of Wrist Arthroscopy: A Multicenter Study Based on 10,107 Arthroscopies Christophe Mathoulin | France A-0795 DRUJ arthroscopy and TFCC repair concept Toshi Nakamura | Japan A-0796 Wrist palmar ganglia cysts: why IWAS members use so many different arthroscopic techniques? Philippe Liverneaux | France 56 A-0797 Early mobilization and ligament instability Max Haerle | Germany A-0798 Arthroscopic refixation of TFCC by bone screw anchor Nicole Schmelzer-Schmied | Switzerland A-0886 Designing a 20 mm incision to protect the dorsal branch of the ulnar nerve during arthroscopic repair of TFCC Wednong Xu Channel 1 09:00-12:00 S57 Patient-reported measures for better care; how do we get beyond the traditional outcome measures? Chairs: Simon Farnebo, Ruud Selles Patient-reported outcome measures have been advocated for decades as tools for patient-cen- tered care and value-based healthcare. Classical patient-reported that measure in hand surgery measure pain, hand function, quality of life, and return to work are slowly working their way into daily clinical care. In recent years, however, other types of patient-reported measures have been proposed, such as experience measures, single-item questionnaires, screening instruments for psychological variables and expectations, and alternative outcome concepts have been proposed, such as the patient-acceptable symptom state. In this session, different presenters will present and discuss innovation in patient-reported measures and their use to improve the quality of hand surgery in daily practice. A-0787 Introduction Simon Farnebo A-0788 Using patient-reported data at point of care Robin Kamal A-0789 Keeping it simple: Hand Normality and the Net Promoter Score Paul Stirling A-0790 Patient-reported experience measures; about more than the quality of coffee Ruud Selles A-0791 How good is good enough? Minimal Important Change and Patient Acceptable Symptom State Miriam Marks A-0792 Measuring patient-reported expectations and mindset; a pathway to improve outcome? Mark van der Oest

57 Channel 2 09:00-10:00 S58 Arthroscopic management of complex wrist insta- bility Chair: Jan Ragnar Haugstvedt, Nicole Schmelzer-Schmied A-0799 Arthroscopic Assisted Reconstruction of LT-Ligament Jan Ragnar Haugstvedt | Norway A-0800 Arthroscopic-Assisted Partial Wrist Arthrodesis Eva-Maria Baur | Germany A-0801 Arthroscopic Distal Scaphoid Resection for Scapho-Trapezium-Trapezoid Arthritis Riccardo Luchetti | Italy A-0802 Effectiveness of an Arthroscopic Technique to Correct Supination Losses of 90° or More Francisco del Pinal | Spain A-0803 Salvage of Failed ABG in Scaphoid Nonunion PC Ho | Hong Kong A-0804 TFCC anatomy: a new arthroscopy and functional 3D-3 part concept Guillaume Herzberg, Marion Burnier | France A-0805 Management of complex wrist injuries Greg Bain | Australia Channel 3 09:00-12:00 S59 Pediatric hand surgery - Congenital malformations and complication Chair: Steven Hovius, Daniel Weber, Wee Leon Lam The well-known saying is: I learned the most from my complications, I still remember them well! Join us at the congenital hand session June 19th. Experts in the field will elaborate on their com- plications and will discuss on their complications what they did about it and how to prevent them. Twelve different hand and forearm anomalies will be presented with ample time for discussion. A-0812 Syndactyly Daniel Weber A-0813 Syndactyly, using artificial grafts Lorenzo Garagnani A-0814 Apert Syndrome Henk Giele

58 A-0815 Radial Polydactyly Christianne van Nieuwenhoven A-0816 Triphalangeal Thumb Steven Hovius A-0819 Cleft Hand Stéphane Guero A-0817 Hypoplastic thumb, Grade 2 and 3A Dean Boyce A-0818 Pollicisation Marybeth Ezaki A-0820 Arthrogryposis Scott Oishi A-0821 Symbrachydactyly Gill Smith A-0822 Macrodactyly Andrea Jester A-0823 Longitudinal radial deficiency Rolf Habenicht A-0824 PULPe Daniel Weber Channel4 09:00-10:00 S60 Hand trauma Prevention and prevention of compli- cations Chair: Anna De Leo, Geert Buijze A-0734 Possible ideas for a trauma prevention campaign in Europe Anna De Leo A-0735 Prevention of most common mistakes in hand trauma Zoe Dailiana A-0736 Prevention of complication in replantation surgery Pierluigi Tos

59 Channel 2 10:00-12:00 s62 Arthroscopic management of wrist instability Program synopsis: 1. Short refresher of wrist arthroscopy, how to avoid complications, know your equipment 2. Different techniques to reconstruct Scaphoid Lunate tears 3. Different techniques to reconstruct TFCC instability

Invited surgeons: Max Haerle Andrea Atzei Michel Levadoux Mireia Esplugas Niels Schep Joost Colaris Roland Klein Nagelvoort Henk Coert

Table 1 Arthroscopic Scapholunate repair: - Intro with slides (3 min) Niels Schep - Capsulodesis with(out) anchor (35 min) Max Haerle / Niels Schep

LIVE FROM Hong Kong: Box PC Ho reconstruction (15 min) PC Ho - Intro with slides (3 min) Roland Klein Nagelvoort - Stabilization SL and with resection/interposition arthroplasty (45 min) Michel Levadoux / Joost Colaris

LIVE FROM Madrid: Corella reconstruction (15) Fernando Corella

Table 2 Arthroscopic repair of the TFCC: - Intro with slides (3 min) J Henk Coert - TFCC: fovea repair with anchor (25 min) Andrea Atzei / J Henk Coert - Capsular repair (25 min) Mireia Esplugas / Roland Klein Nagelvoort - Intro with slides (3 min) Joost Colaris - TFCC Reconstruction (with tendon graft) (50 min) Andrea Atzei / Mireia Esplugas

Remote moderator from Norway: Jan Ragnar Haugstvedt Channel4 11:10-12:00 S68 Complex Regional Pain Syndrome Chair: Piotr Czarnecki A-0743 A modern pharmacologic approach to CRPS with neridronate Simona Odella, Massimo Varenna, Chiara Crotti

60 A-0744 Surgery for some "CRPS" patients - who, how, and when - Francisco del Pinal Channel 1 12:30-13:30 s69 Wrist arthroplasty / COVID Chair: Juan José Hidalgo Diaz A-0184 PROSTHETIC REPLACEMENT OF THE WRIST sandra pfanner, giovanni munz, giulio lauri, prospero bigazzi | Hand Surgery and Recontructive Microsurgery Unit - AOU Careggi Hospital, Florence ITALY A-0242 Universal 2 Total Wrist Arthroplasty for Rheumatoid Arthritis David Veigl, Stanislav Popelka, Jan Pech | David Veigl A-0647 Hand Trauma injury pattern during the Pandemic Bafiq Nizar1,2 Tae Park1, Qureish Vanat1, Ohema Powell1, Maximilian Gardner1, Ellie Ctori1, Ella Tu- melty1, Jill Webb1, Rajive Jose1, Samuel George1, Mark Foster1, Darren Chester1, Dominic Power1, | 1Birmingham Hand Centre, University Hospitals NHS Foundation Trust, United Kingdom; 2St. John's Hospital, Livingston, United Kingdom A-0512 Should we stop elective surgery during a pandemic ? Bafiq Nizar1,2, Tae Park1, Qureish Vanat1, Ohema Powell1, Maximilian Gardner1, Ellie Ctori1, Ella Tu- melty1, Jill Webb1, Rajive Jose1, Dominic Power1 | 1Birmingham Hand Centre, University Hospitals NHS Foundation Trust, United Kingdom; 2St. John's Hospital, Livingston, United Kingdom A-0500 A Safe Protocol for Intra-articular Steroid Injections to the Hand During COVID-19 Pandemic Sofia Eriksson, Iain Roy, Robert Manton, Patrick Goon, Frederik Schreuder | Lister Hospital, Stevenage, UK A-0644 Patient Reported Outcome Measure in Hand Trauma Surgery During a Pandemic Bafiq Nizar1,2, Tae Park1, Qureish Vanat1, Ohema Powell1, Maximilian Gardner1, Ellie Ctori1, Ella Tu- melty1, Jill Webb1, Rajive Jose1, Dominic Power1 | 1Birmingham Hand Centre, University Hospitals NHS Foundation Trust, United Kingdom; 2St. John's Hospital, Livingston, United Kingdom A-0511 Patient-reported outcome measures in management of paediatric traumatic fingertip injuries using skin glue or sutures: a comparative study before and during COVID Jia Choong1, Colin Brewster1, Aayushi Singal2, Nikita Shah1, Nicola Gallaher1, Aisha Hussein2, Ming Ing Chew2, Yan Tsui2, Ethel Ojo2, Kezia Echlin1, Andrea Jester1 | 1Birmingham Children's Hospital, United Kingdom; 2Aston Medical School, United Kingdom A-0453 Post-Proning Plexopathy in COVID-19 Critical Care Patients: a regional hand and nerve surgery service’s experience and recommendations at a major critical care centre Ali M. Jawad, Jack Jeffrey, Emma Cahill, Caroline Miller, Joel O’Sullivan, Andrew Sanders, Abdus Burahee, Dominic Power | HaPPeN Research Group, Queen Elizabeth Hospital, Birmingham, United Kingdom

61 A-0885 Wrist arthroplasty / COVID session commentary Juan José Hidalgo Diaz Channel 2 12:30-13:30 S70 Carpal / arthroscopy Chair: Gerald Kraan A-0582 Surgical treatment of chronic (misdiagnosed) perilunate fracture dislocations Sergii Strafun, Oleksii Dolhopolov, Sergii Tymoshenko, Serhii Bezruchenko, Maryna Yarova | SI «Institute of traumatology and orthopedics of the NAMS of Ukraine», Kyiv, Ukraine A-0399 Outcomes of a proprioceptive retraining program in patients with midcarpal instability; a cohort study of 194 patients Mart Brands1,2, Ruud Selles1,2, Yara van Kooij1,2,4, Reinier Feitz3, Harm Slijper3, Robbert Wouters1,2,4 | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Nether- lands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, Amsterdam, The Netherlands; 4Center for Hand Therapy, Handthera- pie Nederland, Utrecht, The Netherlands A-0486 Differences in psychological factors between patients treated operatively and patients treated conservatively for carpal instability W. Davids, B. Hesseling, G.A. Kraan, N.M.C. Mathijssen | Reinier de Graaf Hospital, Delft, The Netherlands A-0671 ScaphoTrapezioTrapezoidal Joint Arthritis Arthroscopic Treatment with Tendon allograft Double Interposition Rita Pereira Cavaca1, Paulo Gil Ribeiro1, Catarina Quintas1, Paulo Costa1, José Alexandre Marques1 | 1Centro Hospitalar e Universitário de Coimbra, Orthopaedics Department, Portugal A-0605 Clinical and biomechanical evaluation of STT arthrodesis Artur Soczka1, Marta Jokiel 1,2, Piotr Czarnecki1, Leszek Romanowski1 | 1Traumatology, Orthopedics and Hand Surgery Department Poznan University of Medical Sciences, Poland; 2Physiotherapy Clinic Poznan University of Medical Sciences, Poland A-0520 Diagnostic arthroscopy in the surgical planning of wrist Osteo-arthritis Jane C Messina1, Riccardo Luchetti2, Paolo Arrigoni1, Alessandra Menon1, Pietro Randelli1 | 1First Orthropaedic Clinic, University of Milan, Gaetano Pini- CTO Orthopaedic Institute, Milan, italy; 2Rimini Hand Centre, Rimini, Italy A-0275 Arthroscopic synovectomy of the wrist in patients with rheumatoid arthritis: a systematic review and meta-analysis Philip d’Ailly1, Marjolein Mulders1, Radjesh Bisoendial2, Marc Kok2, Henk Coert3, Niels Schep1 | 1Department of Hand and Trauma Surgery, Maasstad Hospital, Rotterdam, the Netherlands; 2Department of Rheumatology, Maasstad Hospital, the Netherlands; 3Department of Hand Surgery, University Medical Centre Utrecht, the Netherlands A-0859 Carpal / arthroscopy session commentary Gerald Kraan

62 Channel 3 12:30-13:30 S71 Congenital thumb/radius Chair: Christianne van Nieuwenhoven A-0288 A Systematic Review of Vascularized Toe and Non-Vascularized Toe Phalangeal Transfer for Reconstruction of Congenital Absence of Digits or Thumb Abigail E Meyers, Bahar Bassiri Gharb, Antonio Rampazzo | Cleveland Clinic, Cleveland, OH, USA A-0180 Reconstruction of severely hypoplastic thumb by non-vascularized metatarsal graft with abductor digiti minimi opponensplasty Takehiko Takagi1, Ruriko Iigaya1, Atsuhito Seki1, Shinichiro Takayama1 | 1National Center for Child Health and Development, Tokyo, Japan A-0557 Complications in congenital thumb hypoplasia treatment Igor Shvedovchenko1, Andrei Koltsov1 | 1Federal State Budgetary Institution «Federal Scientific Center of Rehabilitation of the Disabled named after G.A. Albrecht» of the Ministry of Labour and Social Protection of the Russian Federation, St.Petersburg, Russia A-0251 The Morphology of Soft Tissue Abnormalities in Radial Longitudinal Deficiencies: Multiple Tissue Analysis in Experimentally Generated Malformations with the Chicken Model Julia Dong Hwa Oh1, Wee Leon Lam2, Megan G. Davey1 | 1The Roslin Institute, Edinburgh, UK; 2Royal Hospital for Sick Children, Edinburgh, UK A-0591 Assessment of ulnar elongation by distraction osteogenesis in radial longitudinal deficiency. Michał Górecki, Piotr Czarnecki, Marcin Redman | Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences, A-0522 Primary surgery for radial polydactyly: long-term follow up Lisa Ng1, Susan Stevenson1, Helen Stark1, Jane Maraka1, Brid Crowley1 | 1Department of Plastic and Reconstructive Surgery, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Founda- tion Trust, Newcastle upon Tyne, United Kingdom A-0572 Elbow joint formation in children with congenital humeroradial synostosis. Andreу Koltsov1, Igor Shvedovchenko1 | Federal State Budgetary Institution «Federal Scientific Center of Rehabilitation of the Disabled named after G.A. Albrecht» of the Ministry of Labour and Social Protection of the Russian Federation, Russian Federation, 195067, St.Petersburg, Bestuzhevs- kaya street, 50 A-0864 Congenital thumb/radius session commentary Christianne van Nieuwenhoven

63 Channel 4 12:30-13:30 S72 Infections Chair: Frederik Verstreken A-0084 Antibiotic Prophylaxis in Clean Hand Surgery: Prospective Analysis of Major & Minor Complications JUSTIN KISTLER, ASIF ILYAS | The Rothman Institute at Thomas Jefferson University Philadelphia, PA, USA A-0297 A microbiological analysis of 210 cases of hand osteomyelitis Dallan Dargan1,2 Matthew Wyman1,2, Dominic Ronan1, Mark Heads3, Dave Partridge4,5, Jennifer Caddick1, Victoria Giblin1,2 | 1Sheffield Hand Centre, Sheffield Teaching Hospitals NHS Foundation Trust, UK; 2Academic Medical Unit, University of Sheffield, UK;3 Sheffield Medical School, University of Sheffield, UK; 4Department of Microbiology, Sheffield Teaching Hospitals NHS Foundation Trust, UK; 5Florey Institute for Host-Pathogen Interactions, University of Sheffield, UK A-0299 Hand osteomyelitis: a review of the literature over the last 30 years Dallan Dargan1,2, Matthew Wyman1,2, Dominic Ronan1, Megan Baker1, Dave Partridge3,4, Jennifer Caddick1 ,Victoria Giblin1,2 | 1Sheffield Hand Centre, Sheffield Teaching Hospitals NHS Foundation Trust, UK; 2Academic Medical Unit, The University of Sheffield, UK;3 Department of Microbiology, Sheffield Teaching Hospitals NHS Foundation Trust, UK;4 Florey Institute for Host-Pathogen Interac- tions, University of Sheffield, UK A-0117 Hand osteomyelitis in arterial calcification, diabetes mellitus and end stage renal failure: a comparison of 210 cases over 12 years Matthew Wyman1,2, Dallan Dargan1,2, Jennifer Caddick1, Victoria Giblin1,2 | 1Sheffield Teaching Hospitals NHS Foundation Trust, United Kingdom; 2Academic Medical Unit, The University of Shef- field, United Kingdom A-0540 The Utility of Prophylactic Antibiotics in Preventing Infection After Internal Fixation of Closed Fractures of the Hand Guy Feldman1, Hagay Orbach1, Nimrod Rozen1,2,Guy Rubin1,2, | 1Orthopedic Department, Emek Medical Center, Afula, Israel; 2Faculty of Medicine, Technion, Haifa, Israel A-0465 Early bone biopsy and treatment failure rates in osteomyelitis of the hand: a study of 92 patient outcomes Dominic Ronan1, Dallan Dargan1,2, Matthew Wyman1,2, Dave Partridge3,4, Jennifer Caddick1, Victoria Giblin1,2 | 1Sheffield Hand Centre, Sheffield Teaching Hospitals NHS Foundation Trust, UK; 2Academic Medical Unit, University of Sheffield, UK;3 Department of Microbiology, Sheffield Teach- ing Hospitals NHS Foundation Trust, UK; 4Florey Institute for Host-Pathogen Interactions, University of Sheffield, UK A-0276 Silver Ion Doped Hydroxyapatite Coated Titanium Pins Prevent Bacterial Colonization Adnan Sevencan, Elif Kartal Doyuk, Nusret Kose | Eskisehir Osmangazi University, Eskisehir, Turkey

64 A-0398 Risk factors for complications following cat bite injuries of the hand Isabella Fassola, Mojtaba Ghods | Plastische, Ästhetische, Rekonstruktive Mikro/Handchirurgie, Klinikum Ernst von Bergmann GmbH, Potsdam, Germany A-0875 Infections session commentary Frederik Verstreken Channel 1 13:30-14:15 S73 SLAC/SNAC wrist Moderators: Alex Lluch A-0851 SLAC / SNAC? - PRC rules! Jonny Andersson A-0852 SLAC / SNAC wrist - Three bones arthrodesis (Pseudo Proximal Row Carpectomy) Emmanuel Camus A-0853 SNAC/SLAC: four corner fusion Mikko Raisanen 14:15-14:45 S74 Avascular proximal scaphoid pole Moderators: Brigitte van der Heijden, Christina Lipede A-0854 Avascular proximal scaphoid pole 1 Philippe Bellemére A-0855 Avascular proximal scaphoid pole 2 Rohit Arora 14:45-15:30 S75 Scaphoid Nonunion Moderators: Geert Buijze, Antoine Martins A-0856 Scaphoid Nonunion: non-vascularized arthroscopic bone graft Pedro Delgado A-0857 Scaphoid Nonunion: Nonvascularized open technique Pascal Hanneman A-0858 Vascularized bone graft for Scaphoid Nonunion: Medial Femoral Condyle Gernot Schmidle 15:30-15:45 S76 Closing ceremony

65 Poster Gallery

66 A-0160 Radiographic measurements of the normal distal radius: reliability of computer-aided CT versus physicians’ radiograph interpretation Nora Suojärvi, Nina Lindfors, Theresa Höglund, Robert Sippo, Eero Waris | Department of Hand Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland A-0013 Improving hand trauma clerking using an electronic proforma: a full cycle clinical audit Joshua Luck, Kate Spiteri, Annabelle Lim, Jamil Moledina, Roger Adlard | St George’s Hospital, London, UK A-0017 Unstable non-union of the scaphoid, does the DCSS may play a role? Isidro Jiménez1, Pedro J Delgado2, José Medina3 | 1Hospital Universitario Insular de Gran Canaria, Las Palmas de Gran Canaria, Spain; 2Hospital Universitario HM Montepríncipe, Madrid, Spain; 3Mutua de Accidentes de Canarias -MAC-. Las Palmas de Gran Canaria, Spain A-0018 Three-dimensional printed customised adjustable mallet finger splint: A cheap, effective and comfortable alternative. Theodora Papavasiliou1, Rushabh K Shah1, Stelios Chatzimichail2, Lauren Uppal1, Jeffrey C.Y Chan1 | 1Guy’s and St Thomas’ Hospitals, London, UK ; 2Imperial College, London, UK A-0022 Nurse-led Steroid Injection Clinics: An Evaluation of Patient Perceptions and Financial Implications Su Jeong1, Kate Spiteri2, Jamil Moledina2 | 1St George’s University of London, UK; 2St George’s University Hospitals NHS Foundation Trust, UK A-0641 Gunshot injuries of the hand: fractures of the metacarpal bones with defects along the diaphysis and their treatment in a specialized center Daragan R.1, Tovstograi V.2, Kondrashova I.1 | City Clinical Hospital No. 161, Dnipro Railway Clinical Hospital2; Dnipro, Ukraine A-0029 Management of coexisting Lipofibromatous Hamartoma on the median and ulnar nerve. Clinical case and literature review. Ana Scott-Tennent De Rivas1, Laura Prats Gispert1,2, Amer Mustafa Gondolbeu,1,2, Pau Forcada Calvet1,2, Marta Bonjorn Marti1,2 | 1Hospital Universitari Arnau de Vilanova, Spain; 2Universitat de Lleida, Spain A-0036 The clinical results and surgical indication of volar rim plate fixation for distal radius fracture Young Woo Kwon1, Ji Hun Park1, In Cheul Choi1, Jong Woong Park1 | 1Korea University College of Medicine, Seoul, South Korea A-0037 Patient-reported outcomes one year after proximal interphalangeal joint arthroplasty for osteoarthritis Notermans BJW1, van der Oest MJW2, de Boer HL3, Selles RW2, the Hand-Wrist Study group*2, van der Heijden EPA1,4 | 1Radboudumc, Nijmegen, the Netherlands; 2Erasmus MC, Rotterdam, the Netherlands; 3Xpert Clinic, the Netherlands; 4Jeroen Bosch Ziekenhuis, ‘s-Hertogenbosch, the Netherlands A-0046 Ultrasound based measuring method of scapholunate dislocation during scaphoid shift test Raffael Labèr, Lisa Reissner , Ladislav Nagy, Andreas Schweizer | Department of Orthopaedics, Balgrist University Hospital, Forchstrasse 340, 8008 Zürich, Switzerland A-0047 Transthyretin amyloidosis with Bifid Median Nerve as a cause of Bilateral Carpal Tunnel Syndrome: Hand surgeons warning Case Report Andreu Triguero Espinosa1, Silvia Lopez Marné1, Alfred Llop Corbacho1, Jose Moranas Barrero1, Joaquim Casañas Sintes1, José Luis Agulló Ferrer1 | 1Bellvitge University Hospital, Hospitalet de Llobregat, Spain. A-0050 A standardised hand fracture fixation training framework for surgical residents using novel 3D printed ex-vivo hand models: our experience as a unit. Theodora Papavasiliou1, Stelios Chatzimichail2, Jeffrey C.Y Chan1, Charles J Bain1, Lauren Uppal1, 1 Department of Plastic Surgery, Guys’ and St’ Thomas’ Hospitals, Westminster Bridge Rd, Lambeth, London SE1 7EH; 2 Department of Surgery and Cancer, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ; | 1Department of Plastic Surgery, Guys’ and St’ Thomas’ Hospitals, London, UK; 2Department of Surgery and Cancer, Imperial College London, London, UK

67 A-0051 Radiological analysis of silastic finger joint arthroplasties comparing Swanson and NeuFlex (C) implants; implant rotation identified as a moderately common problem. Panagiotis Sgardelis, Grey Giddins | Royal United Hospital, Bath, United Kingdom A-0053 Carpal kinematics after replacing the scaphoid by a patient specific prosthesis - a 4D CT analysis Philipp Honigmann1,2,4, Mathias Haefeli3,4, Marieke de Roo4,5, Joris Oonk4, Gustav Strijkers4, Johannes Dobbe4, Strackee SD5, Streekstra GJ4,6 | 1Hand Surgery, Kantonsspital Baselland, Liestal, Switzerland; 2Medical Additive Manufacturing, Department of Biomedical Engineering, University Basel, Switzerland; 3Hand Surgery, Kantonsspital Graubünden, Chur, Switzerland; 4Amsterdam UMC, University of Amsterdam, Department of Biomedical Engineering and Physics, Amsterdam Movement Sciences, Amsterdam, Netherlands; 5Department of Plastic, Reconstructive and Hand Surgery, Academic Medical Center, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands; 6Department of Radiology, Academic Medical Center, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands A-0059 Tourniquet use in hand surgery - is it time to re-inflate the evidence? Michael Gallagher1, Andrew R McKean1, Gordon McArthur2 | 1Department of Plastic Surgery, St Thomas’ Hospital, London, UK; 1Department of Plastic Surgery, Chelsea and Westminster Hospital, London, UK A-0065 Implementation of WALANT surgery in a tertiary hand trauma center Diogo Andrade Guimarães, Luís Vieira, Luís Ribeiro, Nuno Maria, Pedro Martins, Maria Manuel Mouzinho | Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal A-0071 The effects of subtotal tendon suture site isolation: an experimental study in ratThe effects of subtotal tendon suture site isolation: an experimental study in rat Aleksandr Zenchenko1, Yuliya Cherniakova2 | 1Gomel Regional Clinical Hospital (Gomel, Belarus); 2Gomel State Medical University (Gomel, Belarus) A-0073 The Quadriga revisited: a cadaveric study on the anatomy and biomechanics of the Flexor Digitorum Profundus. K. T. M. Oo1, P. B. M. Thomas2 | University Hospitals of North Midlands, Stoke on Trent, Staffordshire, ST4 6QG, United Kingdom. A-0074 The efficacy of superficial flexor sheath infiltration injections for trigger finger. K. T. M. Oo1, T. Helliwell2 | University of Keele, School of Medicine, Staffordshire, ST5 5BG, United Kingdom A-0076 Ulcerating stasis dermatitis of the forearm associated with arteriovenous graft and central vein stenosis Diogo Andrade Guimarães; Luís Ribeiro; Luís Vieira; Rui Barata; Maria Manuel Mendes; Pedro Martins; Maria Manuel Mouzinho | Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal A-0077 Evaluation of the treatment of osteoporosis after distal radius fractures Yuta Nakamura1, Kaoru Tada1, Masashi Matsuta1, Atsuro Murai1, Hiroyuki Tsuchiya1, Naoki Osamura,2, Seigo Suganuma3 | 1Department of Orthopaedic Surgery Graduate School of Medical Sciences Kanazawa University, Ishikawa, Japan; 1Department of Orthopaedic Surgery of Kanazawa Medical Center, Ishikawa, Japan; 2Department of Orthopaedic Surgery of Ishikawa Prefectural Central Hospital, Ishikawa, Japan A-0081 Safety and feasibility of the injection through the dorsal webspace in the treatment of trigger digits: anatomical study. Isidro Jiménez1,2, José Medina1,2, Gerardo L Garcés2,3 | 1Hospital Universitario Insular de Gran Canaria, Las Palmas de Gran Canaria, Spain; 2Universidad de Las Palmas de Gran Canaria. Las Palmas de Gran Canaria, Spain; 3Hospital Perpetuo Socorro. Las Palmas de Gran Canaria, Spain A-0083 Antibiotic Prophylaxis in Clean Hand Surgery: A Prospective Analysis of Major & Minor Complications 1Justin Kistler, MD ([email protected]), 2Asif M. Ilyas, MD, MBA (aimd2001@yahoo. com) | The Rothman Institute at Thomas Jefferson University Philadelphia, PA, USA A-0090 The Effects of Upper Extremity Elevation on Intra-Cast Pressure and Digital Perfusion in a Fiberglass Short Arm Cast Model Briana Fram, William Wang, Asif Ilyas | Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA

68 A-0096 The shape symmetry of the lunate: implications for the design of 3D printed patient- specific implants Nazlı Tümer1, Olivier Hiemstra2, Yvonne Schreurs2, Gerald A. Kraan2, Amir A. Zadpoor1, Johan van der Stok2 | 1Department of Biomechanical Engineering, Delft University of Technology (TU Delft), Delft, The Netherlands; 2Department of Orthopaedic Surgery, Reinier Haga Orthopaedic Centre, Zoetermeer, The Netherlands A-0097 Flexor carpi radialis brevis muscle: a case report Antonio Dudley, Raquel Maroto, Javier Otero, Claudio Peix, Julian Del Rio | Hospital Universitario de la Princesa, Madrid, Spain A-0102 Does circumferential cast prevent fracture redisplacement of reduced distal radius fractures? A retrospective multicenter study. A.C. Berger1, B. Barvelink1, M. Reijman1, T. Gosens2, G.A. Kraan3, M.R. De Vries4, M.J. Verhofstad5, K.W.W. Lansink6, P.F.W. Hannemann7, J.W. Colaris1 | 1Department of Orthopedic Surgery, Erasmus MC Rotterdam, University Medical Center, The Netherlands; 2Department of Orthopedic Surgery, Elisabeth Tweesteden hospital, Tilburg, The Netherlands; 3Department of Orthopedic Surgery, Reinier de Graaf Gasthuis, Delft, The Netherlands; 4Department of Surgery, Reinier de Graaf Gasthuis, Delft, The Netherlands; 5Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam; 6Department of Surgery, Elisabeth Tweesteden hospital, Tilburg, The Netherlands; 7Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands A-0108 1 & 2 Column Fusion - solution for the SLAC or SNAC Wrist; case series of 42 consecutive patients Robert Gvozdenovic1, Lars Solgaard1 | 1Herlev-Gentofte University Hospital of Copenhagen, Department of Orthopedics, Hand Surgery Unit A-0109 Arthroscopic bone grafting of the scaphoid nonunion - high union rate despite the high proximal pole incidence and the humpback deformity Robert Gvozdenovic1, Dejan Susic1 | Herlev- Gentofte University Hospital of Copenhagen, Department of Orthopedics, Hand Surgery Unit A-0118 Serum inflammatory markers in the diagnosis and monitoring of hand osteomyelitis: a retrospective review of 146 cases Matthew Wyman1,2, Dallan Dargan1,2, Diana Kazazzi1, Jennifer Caddick1, Victoria Giblin1,2 | 1Sheffield Teaching Hospitals NHS Foundation Trust, United Kingdom;2 Academic Medical Unit, The University of Sheffield, United Kingdom A-0124 Diagnosis of neurogenic thoracic outlet syndrome based on the clinical status Ji Sup Hwang, Yohan Lee, Kee Jeong Bae, Jihyeung Kim, Hyun Sik Gong, Young Ho Lee, Goo Hyun Baek | Seoul National University College of Medicine, Seoul National University Hospital, Korea A-0127 PIP arthroplasty: Comparison of complications, reoperations and revisions after surface replacing and silicone interposition arthroplasty Olivia Helder1, Miriam Marks1, Andreas Schweizer2, Daniel B. Herren3, Stephan Schindele3 | 1Department of Teaching, Research and Development, Schulthess Klinik, Zurich, Switzerland; 2Department of Orthopedic Surgery, Balgrist University Hospital, Zurich, Switzerland; 3Department of Hand Surgery, Schulthess Klinik, Lenggahalde 2, 8008 Zurich, Switzerland A-0139 Mutiple surgical techniques used in the reconstruction of massive tissue defects after electrocution. Case report Mihaela Pertea1,2, Dmitrii Leontii2, Diana Al Khazaleh2, Alina Mihaela Stan2, Petru Ciobanu1,2 | 1\’Grigore T Popa\’ University of Medicine and Pharmacy, Iasi, Romania; 2Clinic of Plastic Surgery and Reconstructive Microsurgery, \’Sf. Spiridon\’ Emergency County Hospital, Iasi, Romania A-0142 Outcome after simultaneous nerve transfer of spinal accessory and intercostal nerve for preganglionic total arm type injuries in brachial plexus: a preliminary report Young Ho Lee1, Goo Hyun Baek1, Jihyeung Kim1, Ji Sup Hwang1, Jung Eun Lee2 | 1Seoul National University Hospital, Seoul, South Korea; 2Gachon Gill Hospital, Gyeonggi-do, South Korea A-0144 Radiological study of Weilby arthroplasty collapse and clinical relationship Miguel Angel Martínez de la Torre, Norma Trigo Bermúdez, Carlos Antón Fernandez, Enric Cruz Olivé | General Hospital of Granollers, Barcelone, Spain

69 A-0148 Unleashing the Bradford experience in the management of upper limb dog bites: a retrospective review Malik Fleet, Zakir Shariff, Zabihullah Abdul | Bradford Teaching Hospital NHS Foundation Trust, Bradford, UK A-0151 Long-term results of Sauvé-Kapandji procedure Lisa Reissner, Andreas, Schweizer, Lea Estermann, Ladislav Nagy | Department of Orthopedics, Division of Hand Surgery, Balgrist University Hospital, Zurich, Switzerland A-0153 Adherence to Upper-Limb Digital Surgery Local Safety Standards in Plastic Surgical Patients Frederick Wyatt | Newcastle University A-0154 Wrist and upper limb postures when falling Grey Giddins, Hugo Giddins | Royal Ub=nited Hospitals, Bath, UK A-0157 Remote hand therapy amid the COVID-19 pandemic Zeynep Tuna1, Egemen Ayhan2 | 1Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Gazi University, Ankara, Turkey; 2Department of Orthopaedics and Traumatology, Diskapi YB Training and Research Hospital, University of Health Sciences, Ankara, Turkey A-0161 Is the arthroscopic treatment of scaphoid nonunion a reliable procedure? Christian M Windhofer1,2, Josef Schauer1, Peter Jakob1, Patrick Ivusic1, | 1Trauma Department, AUVA Unfallkrankenhaus Salzburg, Austria; 2Ludwig-Boltzmann-Institute for experimental and clinical traumatology, Vienna, Austria A-0165 Seasonal Impact on Surgical Site Infections and Wound Healing Disturbance in Carpal Tunnel Surgery: A Retrospective Cohort Study Wolfgang Raher1,2, Matthias Holzbauer1,2, Oskar Kwasny1,2, Dominik Duscher1, Stefan M Froschauer1,2 | 1Kepler University Hospital Linz, Medcampus III, Austria; 2Johannes Kepler University Linz, Austria A-0166 Diagnostic accuracy of history taking, physical examination and imaging for phalangeal, metacarpal and carpal fractures: a systematic review update. Patrick Krastman1, Nina M. Mathijssen3, Sita M.A. Bierma-Zeinstra12, Gerald Kraan3, Jos Runhaar1 | 1Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of General Practice. Room NA1911 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 2Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands, Department of Orthopaedics. Department of General Practice. Room NA1920 PO Box 2040, 3000 CA Rotterdam, the Netherlands; 3Reinier de Graaf Groep, Delft, the Netherlands, Department of Orthopaedic Surgery. Reinier de Graafweg 5-11, 2625 AD Delft, the Netherlands A-0170 Computer-Aided Three-dimensional Measurement of Carpal Alignment: measurement techniques and normal ranges Robert Sippo, Theresa Höglund, Eero Waris | Helsinki University Hospital Department of Hand Surgery, Helsinki, Finland A-0175 Radiofrequancy electrosurgical thermal damage at wrist arthroscopy Grey Giddins1, David Shewring2, Nick Downing3 | 1Royal United Hospitals, Bath, UK; 2University Hospital of Wales, Cardiff, Wales; 3Nottingham University hospital, Nottingham, UK A-0185 Dislocation of the ulna head: our experience and treatment’s algorithm Sandra Pfanner, Anna Rizzo, Prospero Bigazzi, Marco Biondi, Andrea Poggetti | Hand Surgery and reconstructive Microsuregry Unit - AOU Careggi Hospital , Florence Italy A-0197 Combined surgical approach for corrective osteotomy of malunited fractures of the distal radius Oleg M. Semenkin21, Sergey N. Izmalkov1, Alexander N. Bratiichuk1, | 1Samara State Medical University, Russian Federation; 2Clinical Hospital MD GROUP, Samara, Russian Federation A-0199 The association between trauma and paediatric trigger thumb deformity; experience from a single tertiary referral hospital Nadia Salloum, Pauline McGee, Wee Lam | Royal Hospital for Sick Children, Edinburgh, UK

70 A-0200 Targeted Muscle Reinnervation: A Novel Approach to the Management of a Superficial Branch of Radial Nerve Neuroma Ye Ru Chin, Samuel George, Dominic Power, | Queen Elizabeth Hospital Birmingham, UK A-0203 3D guide design for the management of undisplaced scaphoid waist fractures. First experience in Chile. Carlos Federico Morales Hackett1, Carolina Chavez Gatica2, Cristian Navarro Bravo2, Diego Cortes Carvajal2 | 1Hospital Base San Juan de Dios, Curico, Chile; 2Plan3D, Vina del Mar, Chile A-0209 Patients with a distal radius fracture who necessitate specialist referral and those who develop persistent pain after fracture healing Rebecca Martin1, Emma Reay1 | 1James Cook University Hospital Middlesbrough United Kingdom A-0212 Treatment of Cup Loosening in Ball and Socket Prosthesis using a massive Iliac Crest graft to reconstruct the Trapezium: Technique and first results Vansh Kapila1, Bert Vanmierlo2, Chul Ki Goorens3, Kjell Van Royen4, Jean Goubau5 | 1Department of Orthopaedics and Traumatology, ZNA Jan Palfijn, Antwerp, Belgium;2 Department of Orthopaedics and Traumatology, Delta Hospital, Roeselare, Belgium; 3Department of Orthopaedics and Traumatology, RZ Heilig Hart, Tienen, Belgium; 4Department of Orthopaedics and Traumatology, AZ Damiaan, Oostende, Belgium; 5Department of Orthopaedics and Traumatology, Maria Middelares Hospital, Ghent, Belgium A-0213 How useful are inflammatory markers in hand infections? Amenah Galo ,Maria Houlihan, Darren Chester ( senior Author), | Queen Elizabeth Hospital Birmingham, United Kingdom. A-0217 Splint therapy for carpal tunnel syndrome Ryosuke Ikeguchi, Takashi Noguchi, Maki Ando, Koichi Yoshimoto, Bungo Otsuki, Shuichi Matsuda | Kyoto University, Kyoto, Japan A-0223 Common Peroneal Nerve (CPN) Dynamic Decompression, Anatomical Landmarks and Surgical Outcomes Madi El Haj, Ayman Khoury, Shawar Munther, Ido Volk, Sofia Vorobeitchik, Shai Luria | Hadassah Hebrew University Medical Center, Jerusalem, Israel A-0224 High Radial Nerve Injury – Nerve Transfer vs Nerve Decompression. The Role of Intraoperative Electrical Diagnostic studies on Decision Making Madi El-Haj, Sofia Vorobeitchik, Ido Volk, Munther Shawar, Ayman Khoury, Shai Luria | Hadassah Hebrew University Medical Center, Jerusalem, Israel A-0225 Obliteration of the Scalene Triangle on Sagittal MRI is Correlated with Intraoperative Compressive Findings of the Brachial Plexus and Subclavian Artery in Patients With Neurogenic Thoracic Outlet Syndrome (NTOS) Madi El-Haj, Ori Wald, Amit Korah, Ido Volk, Sofia Vorobeitchik, Nurith Hiller, Shai Luria | Hadassah Hebrew University Medical Center, Jerusalem, Israel A-0229 Percutaneous ultrasound guided section of the lacertus fibrosus for median nerve entrapment at the elbow Thomas APARD1, Olivier MARES2, Paul MICHELIN3 | 1Ultrasound Hand Center, Versailles, France; 2Department of Orthopedic surgery, University Hospital, Nîmes, France; 3Department of Radiology, University Hospital, Rouen, France A-0231 Congenital Boutoniere deformity of thumb secondary to attenuation of the Extensor Pollicis Brevis tendon. A case report. Antonio Dudley, Sergio Marcos, Claudio Peix, Raquel Maroto, Jens Cardenas | Hospital Universitario de la Princesa., Madrid, Spain A-0234 Arthroplasty of the proximal interphalangeal joint with the Tactys® prosthesis: clinical and radiographic results with a mean follow-up of 5 years Tim Philips,4, Bert Vanmierlo3, Michiel Cromheecke1, Pieter-Bastiaan De Keyzer1, Jean F Goubau1,2 | 1Department of Orthopaedics and Traumatology, Upper Limb Unit, Maria Middelares Hospital, Ghent, Belgium; 2Department of Orthopaedics and Traumatology, University Hospital Brussels (Vrije Universiteit Brussel), Brussels, Belgium; 3Department of Orthopaedics and Traumatology, Delta Hospital, Roeselare, Belgium; 4Department of Orthopaedics and Traumatology, University Hospital Ghent (UG), Ghent, Belgium

71 A-0235 Spontaneous tendon rupture of both extensor tendons of the index finger secondary to osteophytosis of a snac (Scaphoid Non Union Advanced Collaps) wrist Tim Philips4, Kjell Van Royen3, Koen Mermuys4, Bert Vanmierlo5, Jean F Goubau12 | 1Department of Orthopaedics and Traumatology, Upper Limb Unit, Maria Middelares Hospital, Ghent, Belgium; 2Department of Orthopaedics and Traumatology, University Hospital Brussels (Vrije Universiteit Brussel), Brussels, Belgium; 3Christina M Kleinert Institute for Hand & Microsurgery, Louisville, United States; 4Ghent University (UG), Ghent, Belgium; 5Department of Orthopaedics and Traumatology, Delta Hospital, Roeselare, Belgium; 5Department of Radiology, AZ-Sint-Jan Hospital Bruges, Belgium A-0237 Rare finding of traumatic anterior luxation of the thumb carpometacarpal joint Corneliu- George Coman, Liviu-Dumitru Damian, Nadine Schmid, Iva Neshkova | Centre Hospitalier de Luxembourg, Chirurgie Plastique A-0243 Total brachial plexus lesion reconstruction with contralateral c7 transfer. Francesca Fissore, Paolo Titolo, Bruno Battiston | Operative Unit of Orthopedics and Traumatology - Reconstructive microsurgery and upper limb surgery - CTO University Hospital - Turin, Italy A-0248 Skeletal Fixation in mutilated hand. Can intramedullary headless screw fixation be considered an alternative to K-wire fixation for definitive treatment in hand and finger replantation? Andrea Poggetti, Suardi Chiara, Munz Giovanni, Pfanner Sandra, | Hand and Reconstructive Microsurgery Unit, AOU Careggi-CTO, Florence, Italy A-0253 3000 years of brachial plexus lesions history Andrii Lysak, Serhii Strafun, Arthur Bezuhlyi | State institution “Institute of Traumatology and Orthopedics of NAMS of Ukraine”, Kyiv, Ukraine A-0255 The steep learning curve in percutaneous A1 pulley release Damian Sutter, Aline Treier, Esther Vögelin | University Hospital, Bern, Switzerland A-0256 The Association between Socioeconomic Deprivation and Congenital Differences of the Hand Claudia Chan1, Paul Stirling2, Wee Leon Lam1,3 | 1University of Edinburgh, Edinburgh, UK; 2Royal Infirmary of Edinburgh, Edinburgh, UK;3 Royal Hospital for Sick Children, Edinburgh, UK A-0257 Outcome predictors after surgery for non traumatic ulnar neuropathy at the elbow Nathalie de Lambilly1, Jessie Lamouille1, Philippe Cuenod1, Stéphane Kämpfen1, Michaël Papaloïzos1, | 1CH8 Centre de thérapie et de chirurgie de la main, Genève, Suisse A-0260 What is The Association Between Surgeons Expertise and Complications in Lateral MIPO Technique for the Treatment of Diaphyseal Humerus Fractures? Ignacio Rellán1, Gerardo Luis Gallucci1, Agustin Guillermo Donndorff1, Pablo De Carli1, Ezequiel Ernesto Zaidenberg1, Jorge Guillermo Boretto1 | (1)Department of Orthopaedics, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina; Instituto de Ortopedia y Traumatología “Carlos E. Ottolenghi,” Potosí 4215 (C1199ACK), Buenos Aires, Argentina A-0264 Neglected and complicated mallet finger: comparison of treatment results with regenerative technologies Arthur Bezuhlyi, Serhii Strafun, Andrii Lysak | State institution “Institute of Traumatology and Orthopedics of NAMS of Ukraine”, Kyiv, Ukraine A-0279 Thrombosis of persistent median artery as a cause of carpal tunnel syndrome Sebastiaan Arnauw, Gerrit De Wachter | 1Jessa hospital, Hasselt, Belgium A-0281 Outcome of nerve transfers in patients with cervical spinal cord injury – the Oswestry experience over the past 4 years Soha Sajid, Alison Mannion, Simon Pickard | Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, SY10 7AG A-0282 Microsurgical Anastomosis Rating Scale (MARS10): A novel scoring system for microsurgical training Filip Dąbrowski, Piotr Stogowski, Filip Fliciński, Jan Białek, Maciej Piotrowski, Tomasz Mazurek | Department of Orthopaedics ans Traumatology Medical University of Gdansk

72 A-0285 ANATOMICAL VARIATIONS OF EXTENSOR POLLICIS BREVIS TENDONS IN D´QUERVAIN´S DISEASE. CASE REPORT AND REVIEW OF LITERATURE Antonio Dudley, Claudio Peix, Sergio Marcos, Javier Otero, Jens Cardenas | Hospital Universitario de la Princesa, Madrid, Spain A-0296 The effect of reformatting axis of computed tomography scans on the measurement of deformities in scaphoid waist nonunion Gwan Bum Lee, Jae Kwang Kim, and Young Ho Shin | Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea A-0302 The effectiveness and safety of bioabsorbable magnesium screw and K-wire within surgical treatment for Upper extrimity fracture Chul-Hyung Lee, Jun-Han Kwon | Department of Orthopedic Surgery, Daejeon Sun Hospital, Daejeon, Korea A-0303 Introduce robotic technology in neurological hand rehabilitation (a review article) Nadia Salajeghe, Maryam Farzad | University of Social Welfare and Rehabilitation Sciences, Tehran, Iran A-0304 Denervation of the proximal interphalangeal joint, results from 54 cases in 42 patients. Lisa Servasier, Jacky Laulan, Guillaume Bacle | Unité de chirurgie de la main et du membre supérieur, hôpital Trousseau, CHRU de Tours, Tours, France A-0316 Improving Hand Therapy: Application of a hand therapy robot to intensify therapy Pascal Lindemann, Désirée Leppla, Beate Jung | LIME medical GmbH, Mainz, Germany A-0325 Development and evaluation of a new smartphone application for the (primary) management of hand emergencies: practical, safe and effective? Nicolas Bigorre, Adrien Linder, Jérome Brunet, Jérome Jeudy, Fabrice Rabarin, Bruno Cesari, Yann Saint-Cast, Guy Raimbeau, Alexandre Petit | Centre de la Main, Angers, France A-0328 Is Smith’s fracture of distal radius a fracture of necessity? Jin Young Kim, Ho Jun Kim | Dongguk University Ilsan Hospital, Goyang, South Korea A-0330 Syndactylies - A review of associated malformations 1 - Miguel Matias; Pedro Pires, Catarina Ladeira, Regina Duarte; 2 - Miguel Matias, Juliana Sousa, Maria Manuel Mouzinho | 1 - Centro Hospitalar Universitária Dona Estefânia; 2 - Centro Hospitalar Universitário Lisboa Central A-0337 Efficacy of superficial transposition of ulnar nerve using flexor fascial sling Jin Young Kim | Dongguk University Ilsan Hospital A-0339 In-hospital production of 3D-printed devices for hand- and wrist-rehabilitation Alissa Gübeli1,2, Philipp Honigmann1,2,3, Marco Keller1,2 | 1Kantonsspital Baselland, Liestal, Switzerland; 2Medical Additive Manufacturing research lab, Department of Biomedical Engineering, University of Basel, Basel, Switzerland; 3Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands A-0346 Capitellum reconstruction with osteochondral flap from the distal femur. A clinical case Jose M. Mendez-Lopez1,2, Artiz Ortega Centol1, Gloria Alsina Rius3, Carolina Pozo Candia2 | 1Hand and peripheral nerve unit Hospital MC-Mutual, Barcelona; 2Hand and peripheral nerve unit Hospital Universitary Sagrat Cor, Barcelona; 3Plastic and reconstructive unit Hospital MC-Mutual Barcelona A-0348 Minimally invasive volar plate osteosynthesis (MIPO) with pronator quadratus sparing versus conventional volar approach with pronator quadratus repair for distal radius fractures Chul Ki Goorens1, Niels Debaenst1, Kjell Van Royen2, Jean Goubau2 | 1Regionaal Ziekenhuis Tienen, Tienen, Belgium; 2Universitair Ziekenhuis Brussel, Brussel, Belgium A-0353 Scaphoid fracture with SL ligament involvment: instabilityor laxity? Role of arthroscopy andd pinning Norman Della Rosa, Vito Duca, Daniele Tosi, Julien Teodori, Roberto Adani | Operative Hand Surgery and Microsurgery Azienda Ospedaliera Policlinico Modena, Italy, Department of Orthopaedic Ospedale Sassuolo, Italy

73 A-0359 Zone II Flexor Tendon Repair by Modified FDS repair Technique followed by Place and active holding: a case series Maryam Farzad1,4, Joy MacDermid1,2, Hossein Abdolrazaghi3, Fereydoun Layeghi4, Erfan Shafiee1 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, Canada; 2Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, Ontario, Canada; 3Tehran University of medical sciences, Tehran, Iran; 4University of social welfare and rehabilitation sciences, Tehran, Iran A-0364 Complications and patient reported outcomes following trapeziectomy with a Weilby sling: a prospective cohort study L Hoogendam1,2,3, MJW van der Oest1,2,3, GM Vermeulen3, R Feitz3,4, SER Hovius3,4, JM Zuidam1, HP Slijper3, RW Selles1,2, the Hand Wrist study group, RM Wouters (1,2,5) | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands; 3Hand and Wrist Center, Xpert Clinic, the Netherlands; 4Department of Plastic, Reconstructive and Hand Surgery, Radboud MC, Nijmegen, The Netherlands; 5Center for Hand Therapy, Handtherapie Nederland, Utrecht, The Netherlands A-0372 Psychometric Properties and Cross-Cultural Adaptation of the Patient-Rated Tennis Elbow Evaluation (PRTEE); A Systematic Review and Meta-analysis Erfan Shafiee1; Joy C MacDermid1; David Walton1; Joshua Vincent2; Ruby Grewal2 | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, London, ON, Canada; 2Roth-MacFarlane Hand and Upper Limb Centre, Western University, London, ON, Canada. A-0374 A Systematic Review of Self-Reported Outcome Measures Assessing Disability Following Hand and Upper Extremity Conditions in Persian Population Erfan Shafiee1; Maryam Farzad1; Mahdieh Karbalaei2, | 1School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, London, ON, Canada; 2Department of Occupational Therapy, Tehran University of Medical Sciences, Tehran, Iran. A-0377 Novel scoring techniques for the Patient Evaluation Measure PROM may deliver rare interval-level measurement in hand trauma Conrad Harrison1, Nick Gape2, Chris Gibbons3, Ryan Trickett2, Jeremy Rodrigues1,4 | 1University of Oxford, UK; 2Cardiff and Vale University Health Board, UK;3 MD Anderson, USA; 4Buckinghamshire Healthcare NHS Trust, UK A-0386 Could an unresolved personal injury claim affect outcomes of hand therapy and hand surgery? L Hoogendam1,2,3, MJW van der Oest1,2,3, JS Souer3, SER Hovius3, the Hand Wrist study group, R Feitz3,4 | 1Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, Rotterdam, The Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands;3Hand and Wrist Center, Xpert Clinic, the Netherlands;4Radboud university medical center, Radboud Institute for Health Sciences, Department of Plastic, Reconstructive and Hand Surgery, Nijmegen, The Netherlands A-0393 Long-term impact of trapeziectomy on the wrist joint: blinded assessment of radiological osteoarthritis in operated and non-operated wrists Elisabeth Brogren1,2, Jack Besjakov3, Isam Atroshi4,5 | 1Department of Hand Surgery, Skåne University Hospital, Malmö; 2Department Translational Medicine, Lund University, Lund, Sweden; 3Department of Radiology, Skåne University Hospital, Malmö, Sweden; (4)Department of Clinical Sciences - Orthopedics, Lund University, Lund; 5Department of Orthopedics, Hässleholm-Kristianstad Hospitals, Kristianstad, Sweden A-0395 Indirect Utility Assessment for Hand Conditions: Mapping the Patient Evaluation Measure onto the EQ-5D Luke Geoghegan1, Conrad J Harrison2, Jeremy N Rodrigues2,3 | 1Section of Vascular Surgery, Division of Surgery and Cancer, Imperial College London. London, UK; 2Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford. Oxford, UK; 3Department of Plastic, Reconstructive and Hand Surgery. Stoke Mandeville Hospital. Aylesbury, UK

74 A-0396 TREATMENT OF FRACTURE DISLOCATION OF THE PROXIMAL INTERPHALANGEAL JOINT OF THE HAND WITH DYNAMIC EXTERNAL FIXATOR Cindy Bouvet1, Jean-Yves Beaulieu1, Kun Liu2, Jan Van Aaken1 | 1Hand Unit, Orthopaedic department, Geneva University Hospital, Rue Gabrielle-Perret Gentil 4, 1211 Geneva, Switzerland; 2Department of hand surgery, Beijing Jishuitan Hospital, 4th medical college of Peking University, 31 Xinjiekou East Street, 100035, Beijing, China A-0408 Wrist arthrodesis to improve hand position and function in patients with upper limb spasticity – a point of technique Soha Sajid, Ben Chatterton, Simon Pickard | Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, SY10 7AG A-0410 Is there a difference in the outcome of CMC I resection and treatment with prosthesis after 12 months? Christian M Windhofer1,2, Josef Schauer1, Christoph Hirnsperger1, Johann Neureiter1 | 1Trauma Department, AUVA Unfallkrankenhaus Salzburg, Austria; 2Ludwig-Boltzmann-Institute for experimental and clinical traumatology, Vienna, Austria A-0411 Management of upper extremity injuries during COVID-19 Gordana Georgieva, Bisera Nikolovska, Blagoja Srbov, Tomislav Jovanoski, Igor Peev, Sofija Pejkova | University Clinic for Plastic and reconstructive surgery - Skopje, North Macedonia A-0423 Combined Effect of Surgical Angiogenesis and Stem Cell Seeding of Acellular Nerve Allografts on Return of Motor Function in a Rat Sciatic Nerve Defect Model Meiwand Bedar, Tiam M. Saffari, Patricia F. Friedrich, Allen T. Bishop, Alexander Y. Shin | Department of Orthopedic Surgery, Division of Microvascular and Hand Surgery, Mayo Clinic, Rochester, MN, USA A-0433 Trapeziectomy for trapeziometacarpal osteoarthritis: systematic review of outcomes and complications at minimum 5-year follow-up Grégoire Chick1,2, Marc Saab3 | 1Latour Hospital, Geneva, Switzerland; 2Weil Cornel University, NY, US; 3Lille University hospital, France A-0438 Reconstruction of segmental large forearm defects with Free Vascularized fibular graft. Clinical results. Maria Ladogianni, Panagiotis Kanellos, Ioannis Kotsalis, Saradis Spyridonos | Hand microsurgery and upper limb department,General hospital KAT, Athens, Greece A-0444 Outcome of multi-fragmentary head and neck fractures of index and middle finger metacarpals Michelle Spiteri | John Radcliffe Hospital, Oxford, United Kingdom A-0449 Complications in flexor tendon injuries in zones I to III: a retrospective case series analysis Tamara Hauri1, Bernadette Tobler-Ammann1, Maurizio Calcagni2, Vera Beckmann-Fries2, Alexandre Kämpfen3, Sebastian Hediger3, Lorena Schrepfer3, Esther Vögelin1 | 1Inselspital, University Hospital Bern, Department of Plastic and Hand Surgery, Bern, Switzerland; 2University Hospital Zurich, Department of Plastic and Hand Surgery, Zurich, Switzerland; 3University Hospital Basel, Clinic for Plastic, Reconstructive, Aesthetic and Hand Surgery, Basel, Switzerland A-0451 Hamatometacarpal fracture-dislocation: does delayed treatment yield poor results? A retrospective study Carla Nunes, João Silva, Hugo Ribeiro, Pedro Fernandes, Raquel Teixeira | Hospital de São Francisco Xavier, Lisbon, Portugal A-0457 Rapid Implementation of Virtual Consultations During the COVID-19 Pandemic: An International Survey of Hand Surgeons and Therapists and Implications for Future Practice Alexander Scarborough1, Luke Geoghegan2, Zaf Naqui3, Maxim D Horwitz4 | 1Department of Cardiothoracic Surgery, Kings College Hospital, London, UK; 2Section of Vascular Surgery, Department of Surgery and Cancer, Imperial College London, London, UK; 3Salford Royal Hospital, Salford, UK; 4Department of Hand Surgery, Chelsea and Westminster Hospital, London, UK A-0461 Our initial experience of NovoSorb Biodegradeable Temporising Matrix for reconstruction of complex soft tissue defects in the hand R. N Manton, I. Roy, S. Eriksson, P. Goon | Lister Hospital, East and North Hertfordshire NHS Trust, Stevenage, United Kingdom

75 A-0462 Restoration of shoulder flexion/elevation with free functional gracilis transfer for partial paralysis of deltoid muscle after proximal humerus fracture fixation: a case series of eight patients. Oskar C. Aszmann, Clemens Gstöttner, Petra Gettinger, Olga Politikou, Stefan Salminger | Department of Plastic and Reconstructive Surgery, Medical University of Vienna, AUSTRIA A-0468 The treatment results of distal radius fractures treated with an implant of own idea, DRONes hybrid nail plate - preliminary report Maciej Piotrowski | Department of Orthopaedics and Traumatology Medical University of Gdansk A-0471 The Effect of Nerve Surgery on Opioid and Medication Use in Patients with Chronic Pain due to Nerve Injuries Ivica Ducic1, John M Felder2 | 1Washington Nerve Institute, McLean, VA, USA; 2Washington University, St Louis, USA A-0472 Outcome of distal interphalangeal joint arthrodesis Horst Zajonc, Alexander Runkel, Bastian Bonaventura, Laura Schneider, G Bjoern Stark | Clinic of Plastic and Hand Surgery, University clinic of Freiburg A-0473 Optimization of hand trauma care at a Major Trauma Centre (MTC) in the UK during the COVID-19 pandemic and implications for future clinical practice Apoorva Khajuria1, Sunil Parthiban1, Pradeep Janardhanan2, Matthew Jones2 | 1University Hospitals Birmingham; 2University Hospitals Coventry & Warwickshire A-0475 Improving patient outcomes by minimally invasive surgical techniques Iulian- Daniel Vilcioiu1, Andrei Popa2, Dragos Zamfirescu1, Claudiu Jaba1, Adriana Serban1, Marius Niculescu2 | 1Zetta Clinic, RO 2Colentina Hospital,RO A-0476 Geissler classification: poor interobserver variability and not the most important tool to recommend surgery Daniel Bakker, Joost Kortlever, Gerald Kraan, Joost Colaris, Nina Mathijssen, David Ring | 1Reinier de Graaf Gasthuis, Delft, the Netherlands; 2Erasmus MC, Rotterdam, the Netherlands; 3University of Texas in Austin, USA A-0478 Lost fingers: The declining number of replantations in Germany Haydar Kükrek1, Philipp Moog1, Nedeoglo Ekaterina1, Stefanie Wieschollek2, Kai Megerle2, | 1Division of Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; 2Center for Hand Surgery and Microsurgery, Schön Klinik, Munich A-0484 Management of post-axial Type B polydactyly during COVID-19 Lisa Ng1, Brid Crowley1 | 1Department of Plastic and Reconstructive Surgery, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom A-0485 Percutaneous Arthrolysis as a therapeutic alternative to proximal interphalangeal stiffness in fingers Marta Marti-Puente, Anna Escolà-Benet, Gian Carlo Fallone-Lapi, Marc Valls- Mellado, Joaquim Rodriguez-Miralles | Hospital Universitari General de Catalunya. Sant Cugat del Valles. Spain A-0492 A Bayesian approach for diagnostic accuracy of malignant peripheral nerve sheath tumors: a systematic review and meta-analysis Enrico Martin1,2, Ritchie T.J. Geitenbeek1,2, J. Henk Coert1, David F. Hanff2, Laura H. Graven2, Dirk J. Grünhagen2, Cornelis Verhoef2, Walter Taal2 | 1University Medical Center Utrecht, The Netherlands; 2Erasmus Medical Center Rotterdam, The Netherlands A-0493 Infrared thermography’s applications in Hand Surgery Manuel Vilela1, Eduarda Mota-Silva2, Anna Poplavska2, Inês Iria2, Valentina Vassilenko2, Diogo Casal1,2, Maria Manuel Mouzinho1 | 1Plastic, Reconstructive and Aesthetic Surgery Department and Burn Unit, Centro Hospitalar Universitário Lisboa Central; 2NOVA Medical School, Faculdade de Ciências Médicas de Lisboa A-0498 Ray reconstruction using autologous bone graft and silicone implant after traumatic massive bone loss of P1 or P2. Ida Ponzo, Vincent Mazzone | Fondazione Policlinico Universitario A. Gemelli IRCCS, Istituto di Ortopedia e Traumatologia, U.O.C. Ortopedia e Chirurgia della mano, Università Cattolica del Sacro Cuore, Roma

76 A-0514 Adapting to the Covid-19 Pandemic in a Major UK Hand Unit - Redesigning a Trauma Service and Extending WALANT Surgery Cameron Clarke, Mohamed Abdelrazek, Michael Gallagher, Ricardo Tejero, Lauren Uppal | Guy’s and St Thomas’ NHS Foundation Trust A-0521 Nerve transfers in upper motor neuron syndrome: topographic anatomy. Olga Politikou1, Leopold Harnoncourt1, Fabian Fritsch1, Matthias Luft1, Vlad Tereschenko1, Christopher Festin1, Lena Hirtler2, Oskar C. Aszmann1 | 1Clinical Laboratory for Bionic Extremity Reconstruction, Medical University of Vienna, Austria; 2Center for Anatomy and Cell Biology, Medical University of Vienna, Austria A-0534 Factors affecting the final outcomes after reconstruction of the median and ulnar nerve at the level of the forearm: Analysis of 41 patients. Piotr Czarnecki, Michał Górecki, Leszek Romanowski | Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences A-0536 Outcomes of Thoracic Outlet Decompressions – a 10-year Review in A Single Centre Jing SS, Yasmeen S, O’Sullivan J, Chaudhry T, Madura T, Power D, Tan S | Queen Elizabeth Hospital, Mindelsohn Way, Birmingham, UK, B15 2TH A-0537 Dorsal plating and autologous bone graft for volar unstable fracture-dislocation of the PIP joint Jing SS, Tan S, Yasmeen S | Queen Elizabeth Hospital, Mindelsohn Way, Birmingham, UK, B15 2TH A-0545 The significance of the bacterial agent in pyogenic flexor tenosynovitis – a retrospective case study of 102 patients Antonella Mazreku1, Martin Byström1,2, Joakim Strömberg1,3 | 1Gothenburg University, Sahlgrenska Academy, Institute for clinical sciences, Gothenburg, Sweden; 2Department of Hand Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden; 3: Department of Surgery and Ortopaedics, Alingsås Lasarett, Alingsås, Sweden A-0546 The biomechanical strength of the side-to-side lengthening tenodesis in spasticity surgery Joakim Strömberg1,2, Johan Berg1,3), Carina Reinholdt1,3 | 1University of Gothenburg, Sahlgrenska Academy, Department of Clinical Sciences, Gothenburg, Sweden; 2Department of Surgery and Orthopaedics, Alingsås Lasarett, Alingsås, Sweden; 3Centre for Advanced Reconstruction of Extremities, Sahlgrenska University Hospital, Mölndal, Sweden A-0562 Which tendon plasty has the best outcome? A comparison of four tendon plasty techniques in a large cohort of patients with symptomatic trapeziometacarpal osteoarthritis. Lisa Hoogendam1,2,3, Thijs Bink1, Jurriaan de Lange1, Ruud W. Selles1,2, Joost W. Colaris4, J. Michiel Zuidam1, Steven E.R. Hovius3,5, Hand-Wrist Study Group, Brigitte van der Heijden5,6 | 1Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus MC, Rotterdam, the Netherlands; 2Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, the Netherlands; 3Hand and Wrist Centre, Xpert Clinics, the Netherlands; 4Department of Orthopaedic Surgery, Erasmus MC, Rotterdam, The Netherlands; 5Department of Plastic and Reconstructive Surgery, Radboudumc University Hospital, Nijmegen, the Netherlands; 6Department of Plastic and Reconstructive Surgery, Jeroen Bosch Ziekenhuis, ’s-Hertogenbosch, Netherlands A-0564 Comparison Of Outcomes Between Absorbable Versus Non-Absorbable Sutures For Skin Closure In Patients Undergoing Trigger Finger Release Angelo Ostrea1, David Alagar1 | 1St. Luke’s Medical Center - Quezon City, Philippines A-0565 Forearm rotation improves after a corrective osteotomy in patients with a symptomatic distal radius malunion E.M. van Es1, M. Dijkhof1, J.S. Souer2, F.J. van Ewijk3, L. Hoogendam4, H.P. Slijper2, R.W. Selles45, Hand-Wrist Study Group, J.W. Colaris1 | 1Department of Orthopedic Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands; 2Hand and Wrist Center, Xpert Clinic, Amsterdam, The Netherlands; 3Center for Hand Therapy, Handtherapie Nederland, Utrecht, The Netherlands; 4Department of Plastic, Reconstructive and Hand Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands; 5Department of Rehabilitation Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands

77 A-0573 Description and evaluation of the reproducibility of two new monitoring indexes for ball & socket type trapezio-metacarpal prostheses Axel VAN VLIET1, Benjamin HADDAD2, Simon RATTIER3, Samuel ZRIBI4, Emmanuel DAVID5 | CHU Amiens Picardie, France A-0575 Random dorso-radial flap for the first web space of the hand Margit Singer, Mónica Francés Monasterio, José Miguel Casarrubios Barrera, Javier Fernández-Palacios, | Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, España A-0579 Proximal pole nonunion of the scaphoid treated by solely Extracorporeal Shockwave therapy (ESWT) Christoph Pezzei1, Stefan Quadlbauer1,2,3, Thomas Beer1, Rudolf Rosenauer1,2,3, Josef Jurkowitsch1, T. Hausner1,2,3, M. Leixnering1 | 1AUVA Trauma Hospital Lorenz Böhler, Vienna, Austria; 2Ludwig Boltzmann Institute of Experimental and Clinical Traumatology, AUVA Research Center, Vienna, Austria; 3Austrian Cluster for Tissue Regeneration, Vienna, Austria A-0584 PREVENTING SMAC WRIST: CORRECTIVE OSTEOTOMY OF THE SCAPHOID Eudaldo Gallo Del Valle, Alfonso Prada Cañizares, Miguel Ángel Porras Moreno, Enrique Peces, Félix Tomé Bermejo | Hospital General Universitario de Villalba, Madrid, Spain A-0592 Time to improvement after corticosteroid injection for trigger finger. Daniel A. Seigerman1, Richard McEntee1, Jonas Matzon1, Kevin Lutsky1, Daniel Fletcher1, Michael Rivlin1, Mason Vialonga2, Pedro Beredjiklian1 | 1Rothman Orthopaedics, Philadelphia, USA; 2Rutgers Robert Wood Johnson Medical School, New Brunswick, USA A-0593 The influence of shoulder arthrodesis on the function of the upper limb in adult patients after a brachial plexus injury – a systematic review of the literature. Michał Górecki, Piotr Czarnecki | Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences, A-0595 The treatment of Dupuytren’s disease in a specialized department Kondrashova І.1, Naumenko L.,2, Daragan R.1 | 1«City Clinical Hospital №16»; 2State Institution « Dnipropetrovsk Medical Academy of the Ministry of Health of Ukraine» Dnipro, Ukraine A-0597 Index PIP arthroplasty associated to thumb delta phalanx osteotomy to restore pulp to pulp pinch in Apert’s hands Vincent Mazzone, Camillo Fulchignoni, Valeria Palermi | Hand Surgery Unit - Policlinico Gemelli - Università Cattolica Sacro Cuore - Roma A-0600 Manegement of acrometastasis in hand, our experience in 9 cases Valverde D, Sala A, Pardo A, Dominguez E | Parc de Salut Mar, Barcelona, Spain A-0602 Reconstruction of forearm large skeletal defects by free vascularized fibular graft Panagiotis Konstantinou, Charalampos Pitsilos, Triantafyllos Katsimentzas, Charalampos Pavlopoulos, Pericles Papadopoulos, Konstantinos Ditsios | 2nd orthopaedic department A.U.TH, “G.GENNIMATAS” general hospital of Thessaloniki, Thessaloniki, Greece. A-0603 Results of surgical treatment in 15 cases of simultaneous olecranon and radial head fractures. Konstantinos Chitas, Vasilis Balamotis, Triantafyllos Katsimentzas, Panagiotis Konstantinou, Pericles Papadopoulos, Konstantinos Ditsios | 2nd orthopaedic department A.U.TH, “G.GENNIMATAS” general hospital of Thessaloniki, Thessaloniki, Greece. A-0610 Factors associate with disability and pain intensity in patients with CRPS Maryam Farzad1,2, Joy Macdermid2,5, Tara Packham3, Amirreza farhoud4, Erfan Shafiee2, Mohsen Vahedi1, Behzad Khodabandeh1 | 1University of social welfare and rehabilitation sciences, Tehran, Iran; 2School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, Canada; 3McMaster University, Hamilton, Canada; 4Tehran University of medical sciences, Tehran, Iran; 5Roth McFarlane Hand and Upper Limb Centre, St. Joseph’s Hospital, London, Ontario, Canada

78 A-0614 Early result of the MOTEC® implant in post-traumatic osteoarthritis of the wrist M. Calcagni, M. Guidi, I. Besmens, E. Rothenfluh, F. Früh, M. Calcagni Dept. Plastic Surgery and Hand Surgery, University Hospital Zurich, University of Zurich, Switzerlandrnrn | Dept. Plastic Surgery and Hand Surgery, University Hospital Zurich, University of Zurich, Switzerlandrn A-0615 Immunofluorescence analysis of sensory nerve endings in the ligaments and capsule of the human elbow joint Susanne Rein1,2, Thomas M. Magin3, Paul Lühmann1 | 1Department of Plastic and Hand Surgery, Burn Unit, Hospital Sankt Georg, Delitzscher Straße 141, 04129 Leipzig, Germany; 2Martin- Luther-University Halle-Wittenberg, Magdeburger Straße 8, 06108 Halle (Saale), Germany; 3Division of Cell and Developmental Biology, Institute of Biology, University of Leipzig, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany A-0617 Versatility of free vascularized bone grafts in hand reconstruction Susanne Rein1,2, Omid Amiri1, Thomas Kremer1 | 1Department of Plastic and Hand Surgery, Burn Unit, Hospital Sankt Georg, Delitzscher Straße 141, 04129 Leipzig, Germany; 2Martin-Luther-University Halle-Wittenberg, Magdeburger Straße 8, 06108 Halle (Saale), Germanyrn A-0624 Epidemiology of upper extremity nerve injuries in Finland between 1998 to 2016. Kirsi Wiman1,2, Sina Hulkkonen,2, Jouko Miettunen,3,4, Juha Auvinen,3,4, Jaro Karppinen,4,5, Jorma Ryhänen,2 | 1Department of Surgery, Lapland Central Hospital, Rovaniemi, Finland; 2Department of Hand Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland; 3Center for Life Course Health Research, University of Oulu, Oulu, Finland; 4Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland; 5Finnish Institute of Occupational Health, Oulu, Finland A-0626 Morphological risk factors for scaphoid fracture after fall onto outstretched hand Abigael Cohen1, Thomas Claessen2, Corne van den Berg1, Michiel Siebelt3, Gerald A Kraan4, Johannes H Waarsing1, Max Reijman1, Joost W Colaris1 | 1 Erasmus MC, Rotterdam, the Netherlands; 2 Dijklander Ziekenhuis, Hoorn, the Netherlands; 3 St. Anna Ziekenhuis, Geldrop, the Netherlands; 4 Reinier de Graaf Gasthuis, Delft, the Netherlands A-0629 The impact of COVID pandemic on rates of deliberate self-harm in a tertiary hand unit. P Tan, CT Brewster, R Jose | Birmingham University Hospital A-0630 WRIST TRAUMA SEQUELAE: A DISCURSIVE LITERATURE REVIEW Simona Odella, Francesco Locatelli, Alessandra Fin, Jacopo Flore, Elia Creta, Alessandro Crosio, Pierluigi Tos | Asst Pini CTO Milano, Italy, Complex Operative Unit Hand Surgery and Reconstructive Microsurgery A-0632 How arthroscopy has modified distal radius fractures treatment in our practice Simon Odella, Alessandro Crosio, Jacopo Flore, Ugo Dacatra, Pierluigi Tos | Asst Pini CTO Milano, Italy, Complex Operative Unit Hand Surgery and Reconstructive Microsurgery A-0634 BIOMECHANICAL ANALISYS OF JESS CONSTRUCTS ON METACARPAL BONE FRACTURES AND CLINICAL RESULTS Simona Odella, Alessandro Crosio, Elia Creta, Federica Olivero, Matilde Cacianti, Pierluigi Tos | Asst Pini CT Milano, Italy, Complex Operative Unit Hand Surgery and Reconstructive Microsurgery A-0639 Ball-and-Socket replacement for thumb carpometacarpal osteoarthritis: A comparison between the single and dual mobility design Matthias Papen1, Maxime De Fré1, Kristien Vuylsteke1, Frederik Verstreken1,2, Matthias Vanhees1,2 | 1AZ Monica Deurne/Antwerp, Belgium; 2UZA Edegem, Belgium A-0640 Symptom Duration Affects Central Sensitization and Kinesiophobia in Patients with Thoracic Outlet Syndrome Şule Tüzen1 Tüzün Fırat1 Ayten Kayı Cangır2 | 1Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey; 2Department of Thoracic Surgery, Medicine Faculty of Ankara University, Ankara, Turkey A-0642 Effects of Trunk Compensatory Movements on Modified Mallet Score in Children with Obstetric Brachial Plexus Palsy Esra Merve Çakıryılmaz1, Tüzün Fırat1 | 1Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey

79 A-0643 The reconstruction of the thumb nailbed in malignant skin tumors, using a dorsulnar flap. Esin Rothenfluh1, Marco Guidi1, Florian Früh1, Maurizio Calcagni1 | 1Dept. Plastic Surgery and Hand Surgery, University Hospital Zurich, University of Zurich, Switzerland A-0645 Surgical treatment of neuroma in the upper extremity – patient characteristics, outcome of surgery and association with sleep ability, and limitations to perform work and daily activities Erika Nyman1,2, Emma Dahlin3, Hanna Gudinge3, Lars B. Dahlin1,4,5 | 1Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; 2Department of Hand Surgery, Plastic Surgery and Burns, Department of Biomedical and Clinical Sciences, Linköping University Hospital, Linköping, Sweden; 3Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden; 4Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden; 5Department of Translational Medicine – Hand Surgery, Lund University, Malmö, Sweden A-0646 Management of Distal Radius Osteomyelitis with Vascularized Free Fibula Marco Guidi, Inga Besmens, Florian Früh, Esin Rothenfluh, Maurizio Calcagni, | Department Plastic Surgery and Hand Surgery, University Hospital Zurich, Switzerland A-0648 Surgery of Schwannoma in the upper extremity - consistency between preoperative magnetic resonance imaging (MRI) and pathoanatomical diagnosis (PAD) Erika Nyman1,2, Johannes Belstock1,3, Emanuel Istefan1, Lars B. Dahlin1,4,5 | 1Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; 2Department of Hand Surgery, Plastic Surgery and Burns, Department of Biomedical and Clinical Sciences, Linköping University Hospital, Linköping, Sweden; 3Department of Orthopaedic Surgery, Vrinnevi Hospital, Norrköping, Sweden; 4Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden; 5Department of Translational Medicine – Hand Surgery, Lund University, Malmö, Sweden A-0650 Scaphoid non-union humpback deformity correction using 3D planning and patient- specific guides: a prospective case series of 10 patients P.-B. De Keyzer1,2, M. Van Haver1,3, M. Vanhees1,4 | 1AZ Monica, Antwerp, Belgium; 2AZ Maria Middelares, Gent, Belgium; 3MoRe Institute, Antwerp, Belgium; 4Universitary Hospital Antwerp, Antwerp, Belgium A-0653 Clinical Outcomes of Lunocapitate Arthrodesis: A Retrospective Study Justin Mirza1, Ather Mirza1, John Lubahn2, Zachary Dusckas2, Luke Zappia1, Terence Thomas1 | 1Mirza Orthopedics, Smithtown, NY, USA; 2UMPC Hamot, Erie, PA, USA A-0655 Ulnar Sided Wrist Pain: A Diagnostic Evaluation Guide from 30+ Years of Experience Justin Mirza, Ather Mirza, Luke Zappia | Mirza Orthopedics, Smithtown, NY, USA A-0662 Thumb height measurement for (implant) arthroplasties for CMC thumb joint osteoarthritis Cecile MCA van Laarhoven; Janna SE Ottenhoff; Erik Heeg; Mark van Heijl; Brigitte EPA van der Heijden | Department of Plastic, Reconstructive and Hand Surgery, Erasmus Medical Center Rotterdam, the Netherlands; Department of Plastic, Reconstructive and Hand Surgery, University Medical Center Utrecht, the Netherlands; Plastic Surgery Department, Jeroen Bosch Hospital, Den Bosch, the Netherlands; Plastic Surgery Department, Radboud Medical Center, Nijmegen, the Netherlands A-0664 Arthroscopic repair of the ulnar collateral ligament of the thumb: our experience Martin Caloia, Sergio Ronconi, Hugo Caloia, Diego González Scotti, German Barrozo, Gerónimo Chamorro, Alejandro Meritano, Gonzalo Guevara | Orthopeadic Department, Upper Extremity & Hand Surgery section. Austral University Hospital, Pilar, Buenos Aires, Argentina A-0669 Thumb restoring using a monolithic metacarpal anchored titanium 3D printed prosthesis Leopoldo Caruso1, Monica Ciminello1, Mauro Fusco1, Ida Ponzo2 | 1Ospedale dei Pellegrini, Unità operativa di Chirurgia della mano e dei Nervi periferici, Napoli, Italy; 2Fondazione Policlinico Universitario A. Gemelli IRCCS, Istituto di Ortopedia e Traumatologia, U.O.C. Ortopedia e Chirurgia della mano, Università Cattolica del Sacro Cuore, Roma, Italy

80 A-0672 Closed hand fractures management: tertiary trauma centre experience Amir Ghareib, Sylwia Oniska, Peter Macnael, Jamil Moledina | St. George’s University Hospitals, London A-0693 The impact of COVID-19 pandemic in the nature of hand trauma Rita Meireles1, Gil Ribeiro2, Ricardo Varela3, Alexandre Marques2, Susana Pinheiro1 | 1Plastic Surgery and Burns Department, Coimbra University Hospitals; (CHUC), Portugal; 2Orthopaedics Department, Coimbra University Hospitals; (CHUC), Portugal; 3Neurology Department, Porto Hospital and University Centre; (CHUP), Portugal A-0695 REVERSE HOMODIGITAL FLAPS FOR THUMB AND FINGERS SOFT TISSUE DEFECTS RECONSTRUCTION T Y Sukhinin, A I Shakirov, G F Gubaidullina, G A Nazaryan | Hand Microsurgery Center, Clinical Hospital No. 20 named after A.K. Eramishantseva, Moscow, Russia A-0652 Ligament, nerve and DCSS sparing dorsal capsulotomy of the wrist Ahmed Naeem Atiyya1, Amr Nabil2,Hasan Abd ElHamid3, Mohammed Abbas4 | Orthopaedic Department Faculty of medicine Ain Shams University, Cairo, Egypt

81 Indusrty sponsored programmes

THURSDAY, 17 JUNE 2021, 12:30-14:00

12:30 – 13:20

Medartis Symposium It`s never too late for the right plate. Speakers: Niels Schep, Radek Kebrle, and Grainne Colgan

13:00 – 13:30

Orfit Symposium Advanced Orthotic Fabrication with Isoforce Speaker: Debby Schwartz

13:30 – 14:00

Acumed Symposium Hand Fracture System Overview and Labs Speaker: Professor Randy Bindra

13:30 – 14:00

Materialise Symposium The 3D Technology Behind the World’s First Successful Double Hand and Face Transplant; a clinical engineering perspective. Speaker: Alyssa Glennon

82 THURSDAY, 17 JUNE 2021 17:30-18:00

17:30 – 18:00

Wright (now part of Stryker) Symposium PYROCARDANTM for CMC Osteoarthritis Speaker: Dr Philippe BELLEMERE

17:30 – 18:00

Groupe Lepine Symposium 1 Rationale for trapeziometacarpal joint arthroplasty with 10 years of clinical experience and proven alternative to trapeziectomy Speakers : Dr Jacques TEISSIER, Dr Adriano TOFFOLI and Dr Benjamin DEGEORGE

17:30 – 18:00

Zimmer Biomet Institute Distal radius and scaphoid fractures, The Unusual Speaker: Rouin Amirfeyz

83 FRIDAY, 18 JUNE 2021, 12:30-14:00

12:30 – 12:50

Medartis Discussion Room 1 Ulna shortening and scaphoid non-union treatment. Faculty: Athanasios Terzis 13:00 – 13:50

Stryker Symposium Moovis CMC dual mobility prosthesis, a long term experience & complex cases discussion Speakers: Prof. Gilles Dautel and Prof. Filip Stockmans 13:00 – 13:30

Groupe Lepine symposium 2 NerVFIX™ allogeneic nerve regeneration conduit Speakers: Dr Flore-Anne LECOQ and Dr Laurence BARNOUIN 13:30 – 13:50

Medartis Discussion Room 2 Scaphoid non-union treatment: lessons learned after 100 cases of non-vascu- larized reconstruction. Faculty: Pascal Hannemann

84 Congress partners & Sponsors Premium Congress Sponsor and Premium Corporate Partner

Silver Congress Sponsor

Corporate Partners

Congress Partners Aptis Medical, LLC • Axogen • B. Braun Medical AG • Biover AG Canon Medical Systems Nederland •Disior Ltd • Groupe Lepine Karl Storz Endoskope • Materialise NV • Newclip Technics • Orfit Sage Publishing • Smith & Nephew • Zimmer Biomet

Thank you for supporting FESSH2021 85 http://fessh.com/basic-research-grant/

http://fessh.com/clinical-research-grant/ http://fessh.com/travel-award-application/

http://fessh.com/examination-committee/ http://fessh.com/examination-committee/examination-2022/ http://fessh.com/online-self-assessment-examination/

http://fessh.com/hand-trauma-committee/ http://fessh.com/patronage/

yehs.eu It‘s in your hands: test it now!

AESCULAP® Acculan 4®

AESCULAP® Acculan 4 small drill

AESCULAP® Elan 4® PRECISION. PERFORMANCE. AESCULAP® Elan 4 electro drill PLEASURE.

B. Braun Medical AG | Seesatz 17 | 6204 Sempach Tel. 0848 830 022 | [email protected] | www.bbraun.ch

Aesculap® – a B. Braun brand OS_08_0003_04.2021 Submit your research to Journal of Hand Surgery

Editor-in-Chief: Jin Bo Tang Brown University, Providence, RI, USA

journals.sagepub.com/home/jhs

The Journal of Hand Surgery (European Volume) is Subjects covered include: essential reading for everyone involved in restoring the function to the hand and upper limb. Dedicated • joint replacement to the needs of hand, plastic, reconstructive and • fracture and joint injuries orthopaedic surgeons, it publishes the best selection of current papers on hand surgery. • microvascular surgery

The journal regularly highlights key developments in a • congenital hand problems range of original, authoritative and highly informative You will also find editorials, book reviews, conference articles written by distinguished experts from around dates, case studies, detailed coverage of new the world. Rapid coverage of the latest research, techniques and full-length reviews articles. techniques, trends and ideas to make sure you stay up-to-date.

Submit your manuscripts online at www.editorialmanager.com/jhse

APTUS® TriLock ® 1.5 Scaphoid Plate

Anatomically TriLock® - Fixation Reduction hold pre-contoured plate design multidirectional and of the inserted by increased torsional with 0.8 mm low profile angular stable (±15°) bone graft and bending stability due for volar fixation locking technology to grid structure

0.8 mm

medartis.com